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Science ·Class 9 Science

Exploration Class 9 Science Solutions

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RBSEGuide
· Jul 02, 2026 · Reviewed & updated Sep 17, 2026 · 27 min read

Class 9 Science Exploration Solutions

Class 9 NCERT Science Book Exploration Solutions

NCERT Solutions for Class 9 Science Exploration

Class 9 Science Exploration Chapter 1 Exploration Entering the World of Secondary Science Question Answer

  1. Suppose you ride a bicycle from school to home. You want to model the time taken. Class 9
  2. Why is the speed of light denoted by 'c'? Class 9
  3. Checking 'viral’ claims on social media: Is eating food harmful during an eclipse? Class 9
  4. How Much Rice Would Feed a Family of Four for a Month? Class 9
  5. A passenger aircraft ran out of fuel midflight due to a unit mix-up. Class 9
  6. Why do weather forecasts sometimes go wrong? Class 9
  7. How does a mask really work? Class 9
  8. Think of a prediction you or your family made recently (for example, the outcome of a cricket match). Class 9
  9. Describe one situation where an approximate answer is good enough. Class 9

Class 9 Science Exploration Chapter 2 Cell The Building Block of Life Class 9 Question Answer

  1. Activity 2.1 Let us estimate the size of a cell, To estimate the real size of an onion peel cell. Class 9
  2. Activity 2.2 Let us experiment, To observe the effect of osmosis. Class 9
  3. Activity 2.3 Let us investigate, To prepare and observe temporary slides of plant cells. Class 9
  4. Activity 2.4 Let us study, To study and compare the structures of bacterial. Class 9
  5. Activity 2.5 Let us enhance our skills, To study the structure of activity dividing cells. Class 9
  6. Where does a cell come from? Class 9
  7. How is the cell structural and functional unit of life? Class 9
  8. Mung bean seeds are kept in a concentrated solution after soaking in water for 12 hours? Class 9
  9. What argument would you give for the necessity of a cell wall in plants. Class 9
  10. Do white flowers contain any pigment? Give reasons. Class 9
  11. Instead of many small ones, why does a cell not have a single giant mitochondrion? Class 9
  12. Some cells are specialised to perform specific functions. Class 9
  13. Differentiate between the following pairs of terms based on the clues given in parentheses: Class 9
  14. Two similar animal cells are placed in two different solutions: Class 9
  15. Look at the diagram of a cell in Fig. Identify the parts labelled from (a) to (g). Class 9
  16. Two students, Renu and Rohit, were having a discussion on the plastids. Class 9
  17. Mitochondria and chloroplasts are two important organelles in a plant cell. Class 9
  18. A researcher carried out an experiment in which she took two carrots of similar size. Class 9
  19. Indicate the presence or absence of following structures in bacterial and animal cells: Class 9
  20. Carry out the following experiment: Take four peeled potato halves and scoop. Class 9
  21. Identify the pair that incorrectly matches the cell organelle with its function. Class 9
  22. Which phenomenon inhibits the formation of tumors in the human body? Class 9
  23. What would happen if gametes are formed by mitotic divisions? Class 9

Class 9 Science Exploration Chapter 3 Tissues in Action Class 9 Question Answer

  1. Activity 3.1 Let us design experiment, Apical Meristem causes growth in length. Class 9
  2. Activity 3.2 Let us understand further, To understand the role of blood and its components. Class 9
  3. Activity 3.3 Let us perform, To identify different connective tissues in the human body. Class 9
  4. Activity 3.4 Let us investigate, Let us investigate What percentage of total body weight. Class 9
  5. Activity 3.5 Let us observe, Move different parts of your body and observe what movement(s). Class 9
  6. How is the study of cells and tissues significant for understanding the life. Class 9
  7. How is the division of labour at various levels of organisation in multicellular. Class 9
  8. You may have noticed that fibres of coconut husk are hard and brittle. Class 9
  9. Once water is absorbed by plant roots, it has to travel against gravity through xylem. Class 9
  10. Carefully observe the various poses of classical and folk dances of India. Class 9
  11. Meristematic tissues divide repeatedly. What property of their cells allows them to do this? Class 9
  12. Why are the epithelial tissues that line an animal’s internal organs. Class 9
  13. Which type of joint is involved when you bend your knees and ankles? Class 9
  14. In each of the following cases (A, B, C and D), choose the correct option as given below: Class 9
  15. Plot a graph between the age of a tree (in years) on the x-axis and the diameter. Class 9
  16. In a forest, it was observed that one of the trees was severely debarked by an elephant. Class 9
  17. Aamrapali observed that a young mango sapling’s stem bends flexibly. Class 9
  18. Sohan designed an experiment for the regeneration of sugarcane. Class 9
  19. A tissue is a group of similar cells performing similar functions. Class 9
  20. Coconut husk fibres are used for mats which are tough and fibrous. Class 9
  21. A plant cell and an animal cell are of the same size. Class 9
  22. A textbook states, “Each plant tissue performs only one specific function”. Class 9

Class 9 Science Exploration Chapter 4 Describing Motion Around Us Class 9 Question Answer

  1. The object starts moving from O which is the reference point. Class 9
  2. Activity 4.1 Let us analyse the motion of a ball thrown vertically upwards. Class 9
  3. Ramesh takes 50 seconds to walk from one end to the other end and back on 25 m long road. Class 9
  4. A car is moving on road with velocity of 36 km/h. Driver presses the accelerator. Class 9
  5. Activity 4.2 Let us calculate the magnitude of average acceleration of different types of cars. Class 9
  6. Activity 4.3 Let us plot a position-time graph for a uniformity moving vehicle using data. Class 9
  7. Activity 4.4 Let us calculate the average velocity of a moving vehicle from its position. Class 9
  8. The position time graph of two objects A and B are given below. Class 9
  9. Find the displacement between 10 to 20 s from the graph given below. Class 9
  10. A car accelerates uniformly from 5 m/s to 10 m/s in 5 s. Class 9
  11. Activity 4.5 Let us investigate the direction of motion of an object moving in a circular path. Class 9
  12. How much distance should we maintain from the truck ahead to avoid a collision. Class 9
  13. In the example of an athlete running back and forth on a straight track. Class 9
  14. Fuel used up in a vehicle depends on which of the following? Justify your answer. Class 9
  15. A ball rolls down an inclined track as shown in Fig. Is its motion, a straight line motion? Class 9
  16. Under what condition(s) is the magnitude of average velocity of an object? Class 9
  17. My father went to a shop from home which is located at a distance of 250 m. Class 9
  18. A student runs from the ground floor to the fourth floor of a school building. Class 9
  19. A girl is riding her scooter and finds that its speedometer reading is constant. Class 9
  20. A motorbike moving with initial velocity 28 m s-1 and constant acceleration. Class 9
  21. Fig. shows a position-time graph of two objects A and B that are moving. Class 9
  22. A graph in Fig. shows the change in position with time for two objects A and B moving. Class 9
  23. A truck driver driving at the speed of 54 km hr1 notices a road sign with a speed limit. Class 9
  24. A car starts from rest and accelerates uniformly to 20 m s-1 in 5 seconds. Class 9
  25. A bus is travelling at 36 km h-1 when the driver sees an obstacle 30 m ahead. Class 9
  26. A student said, The Earth moves around the Sun. Class 9
  27. A girl is preparing for her first marathon by running on a straight road. Class 9
  28. On entering a state highway, a car continues to move with a constant velocity. Class 9
  29. Two cars A and B start moving with a constant acceleration from rest in a straight line. Class 9
  30. Rohan studies science from 6 PM to 7:30 PM at home. Consider the tip of the minute’s hand. Class 9

Class 9 Science Exploration Chapter 5 Exploring Mixtures and Their Separation Class 9 Question Answer

  1. Activity 5.1 To identify whether the given mixtures are a true solution. Class 9
  2. Activity 5.2 Let Us Represent Solubility Graphically curves of compounds A and D. Class 9
  3. Based on the information from the above graph, predict which of the two compounds. Class 9
  4. Activity 5.3 To obtain pure crystals of copper sulphate by the process of crystallization. Class 9
  5. Activity 5.4 Let us describe a process how salt crystals are obtained from seawater. Class 9
  6. Activity 5.5 To separate the different coloured components present in black ink. Class 9
  7. Activity 5.6 To separate a heterogeneous mixture of mustard oil and water. Class 9
  8. Activity 5.7 To seperate camphor from sand by sublimation. Class 9
  9. Activity 5.8 To make a simple centrifuge model with a cardboard disc and thick thread. Class 9
  10. Activity 5.9 Complete table and review what you have learnt about solutions. Class 9
  11. Why do suspended particles settle in muddy water over time but not in milk? Class 9
  12. A common talcum powder contains 4 % m/m zinc oxide, which acts as an antiseptic. Class 9
  13. Refer to the solubility curves given in Activity 5.2. If equal masses of hot. Class 9
  14. State whether the following statements are True or False. Also, correct the False statements. Class 9
  15. Why do immiscible liquids form two separate layers in a separating funnel? Class 9
  16. The spinning game is a folk dance called phugadi in Marathi and kikli in Punjabi. Class 9
  17. Clouds are made up of tiny water droplets or ice crystals floating in the air. Class 9
  18. Which of the following mixtures are correctly classified as homogeneous. Class 9
  19. Choose the correct options, and explain the reason for the correct and incorrect options. Class 9
  20. A mixture can be categorised as a solution, a suspension, or a colloid. Class 9
  21. Solve the following problems: A cake recipe uses dry ingredients, namely 75 g of sugar. Class 9
  22. The label on a cooking oil pack says one litre (910 g). If this oil is mixed with water. Class 9
  23. Solutions do not exhibit the Tyndall effect. The particles in solutions are larger than 100 nm. Class 9
  24. How would you separate the mixtures given in table? Class 9
  25. Two miscible liquids, A and B, are present in a mixture. Class 9
  26. Compare evaporation, crystallization and distillation. Class 9
  27. You are given a mixture of sand, common salt and naphthalene. Class 9
  28. Answer the following questions with the help of the data given in table. Class 9
  29. Three students, A, B and C, are preparing sugar solutions for an experiment. Class 9
  30. Identify the separation technique marked as ‘S’. Label the apparatus A, B and C. Class 9

Class 9 Science Exploration Chapter 6 How Forces Affect Motion Class 9 Question Answer

  1. Two forces of 10 N and 6 N are acting on block on the table as shown in figure. Class 9
  2. Activity 6.1 Let us investigate to see the difference in force of friction of different surfaces. Class 9
  3. Activity 6.2 To Measure the Force of Friction. Class 9
  4. A weightlifter lifts a bar with mass of 10 kg fixed on each side of bar. Class 9
  5. A car of mass 1500 kg is moving towards east and its velocity time graph. Class 9
  6. Activity 6.3 Let us experiment to see the impact of applied force on acceleration of object. Class 9
  7. Activity 6.4 Let us experiment to see the relation been mass and acceleration for a given force. Class 9
  8. Activity 6.5 Let us explore to see two objects exert opposite force on each other. Class 9
  9. Activity 6.6 Let us verify that action and reaction forces are equal in magnitude. Class 9
  10. Activity 6.7 Let us understand to demonstrate the Newton's Third Law of Motion. Class 9
  11. A man pushes a box of mass 50 kg with a force of 80 N. Class 9
  12. Why does a canoe move forward when the canoeist pushes water backwards with the paddle? Class 9
  13. A weightlifter lifts a barbell (Fig.). List two forces that are acting on the barbell. Class 9
  14. An object is moving with a constant velocity. Is there a net force acting upon it? Class 9
  15. In the real world, it is difficult to find a situation where no forces are acting on an object. Class 9
  16. Two children of different masses are sitting on identical swings. Class 9
  17. Why does a fireperson sometimes struggle when holding the pipe issuing water? Class 9
  18. Using a horizontal force F, a table is moved across the floor at a constant velocity. Class 9
  19. Two blocks P and Q on a smooth horizontal surface are shown in Fig. (a) and (b). Class 9
  20. When a net force acts on an object, we observe that the object accelerates: Class 9
  21. The position-time graph for four objects A, B, C and D moving along a straight line. Class 9
  22. A sailor jumps out from a small boat to the shore (Fig.). Class 9
  23. A hand cart loaded with vegetables collides with an identical but empty hand cart. Class 9
  24. The acceleration mass graph for the acceleration produced by a force on objects. Class 9
  25. The velocity-time graph of an object of mass 10 kg moving along a straight line. Class 9
  26. An ace footballer converted a penalty shot by kicking the football. Class 9
  27. A tractor pulls a harrow (a ploughing tool) of mass mi with a net force F. Class 9
  28. When the pole of a bar magnet is brought close to a magnetic compass. Class 9

Class 9 Science Exploration Chapter 7 Work Energy and Simple Machines Class 9 Question Answer

  1. In the graph below, force on an object is plotted on y axis. Class 9
  2. A boy lifts a dumbbell and lowers it down. When the boy does positive work. Class 9
  3. In carrom, player struck the shot with striker to pocket the black coin. Class 9
  4. If velocity of vehicle doubles in magnitude, what will be its finial kinetic energy. Class 9
  5. An aircraft of mass 1500 kg lands on the deck of an aircraft carrier. Class 9
  6. Activity 7.1 Let us investigate to study the relationship between the height. Class 9
  7. A cricketer throws a ball of mass 200 g high up in the air to height of 10 m. Class 9
  8. Activity 7.2 Let us experiment to demonstrate conservation of mechanical energy. Class 9
  9. An elevator can carry a maximum load of 1800 kg and move up with a constant speed. Class 9
  10. Ramesh lifts 75 kg of water by 2 m in 5 s. How much power is required for this task? Class 9
  11. Activity 7.3 Let us experiment determine if an inclined plane reduces the force. Class 9
  12. A person uses an inclined ramp of length 50 cm to raise an object. Class 9
  13. Activity 7.4 Let us investigate to demonstrate how a lever can lift a heavier object. Class 9
  14. Activity 7.5 Let us experiment to verify the law of levers using a beam balance with coins. Class 9
  15. For a seesaw with four seats A,B,D,E and fulcrum at C, AC = EC = 2 m and BC = DC = 1 m. Class 9
  16. What will be the magnitude of velocity of the child at the bottom of the blue slide? Class 9
  17. In the previous chapter, a weightlifter is shown holding a barbell steady. Class 9
  18. When you pedal a bicycle on a flat road, your muscles supply energy. Class 9
  19. Does the kinetic energy of an object which moves with constant velocity. Class 9
  20. For the situation depicted in Fig., calculate the mechanical energy of the ball. Class 9
  21. You may have seen a ball roller coaster exhibit (Fig.). Describe how kinetic and potential energy. Class 9
  22. Explain why roads on hills are built to wind around in gentle slopes. Class 9
  23. Why is it easier to open the lid of a can by using a spoon as shown in Fig.? Class 9
  24. Throughout history, many designs of perpetual machines have been proposed. Class 9
  25. Work is said to be done when a force is applied, even if the object does not move. Class 9
  26. The expression for kinetic energy of a body of mass m and velocity. Class 9
  27. When a ball thrown upwards reaches its highest point, tick the correct statement. Class 9
  28. For each of the following situations, identify the energy transformation that takes place. Class 9
  29. A student is slowly lifted straight up in an elevator from the ground level. Class 9
  30. A crane lifts a mass m to the 10th floor of a building in a certain time. Class 9
  31. Which factors determine the energy required to raise a flag from the ground. Class 9
  32. On a seesaw with sliding seats, a child is sitting on one side and an adult on the other side. Class 9
  33. A ball of mass 2 kg is thrown up with a velocity of 20 m. Class 9
  34. A 10.0 kg block is moving on horizontal floor with negligible friction. Class 9
  35. The gravitational attraction on the surface of the Moon. Class 9
  36. A 1000 kg car is moving along a road at a constant speed. Suddenly. Class 9
  37. The potential energy-displacement graph of a 0.5 kg ball moving along a frictionless. Class 9
  38. A coconut of mass 1.5 kg falls from the top of a coconut tree onto the wet sand on a beach. Class 9

Class 9 Science Exploration Chapter 8 Journey Inside the Atom Class 9 Question Answer

  1. Are atoms the smallest indivisible particles? Class 9
  2. Suppose you made up your own ‘atom’, as Thomson described, using clay. Class 9
  3. Could an orange or a lemon, which also contain seeds inside soft pulp. Class 9
  4. What do you think would happen if a-particles were replaced with negatively. Class 9
  5. If you could ask Rutherford one question about his work, what would it be? Class 9
  6. Imagine you are a scientist who has discovered a new element. Class 9
  7. An atom with an atomic number of 26 has 56 nucleons. Find out its number of electrons. Class 9
  8. An atom has 18 neutrons and an atomic number of 17. What is its mass number? Class 9
  9. Identify the number of electrons in the outermost shell of the following elements. Class 9
  10. Solve this riddle. I am an atom with a mass number of 23 and 11 protons. Class 9
  11. If a bromine atom is available in the form of, say two isotopes. Class 9
  12. Choose the correct options and explain the reason for the correct and incorrect options. Class 9
  13. Which of the following statements are correct or incorrect according to the Bohr’s atomic model? Class 9
  14. The composition of the nuclei of three atomic species X, Y, and Z are given as follows. Class 9
  15. What conclusion did Rutherford draw about the position and characteristics. Class 9
  16. Explain and arrange the following statements in the correct chronological. Class 9
  17. Electrons move around the nucleus in orbits. Why do they not fly away from the atom? Class 9
  18. The discovery of subatomic particles helped in understanding the atomic structure. Class 9
  19. Magnesium is essential for many biological processes, including muscle contraction. Class 9
  20. Find the following information for the elements shown in Fig. Class 9
  21. Both Rutherford’s and Bohr’s models have electrons orbiting the nucleus. Class 9
  22. An atom 70X has 31 electrons. How many neutrons are there in its nucleus? Class 9
  23. Complete the Table. Aman was discussing the structure of atom with his classmates. Class 9
  24. Aman was discussing the structure of atom with his classmates. Class 9
  25. In an atom, there are 12 protons and 12 neutrons in the nucleus. Class 9

Class 9 Science Exploration Chapter 9 Atomic Foundations of Matter Class 9 Question Answer

  1. Activity 9.1 To verify that mass is conserved during a physical change. Class 9
  2. Activity 9.2 To investigate whether mass is conserved during a chemical change. Class 9
  3. Students place 4 g of calcium carbonate with 2.92 g of hydrochloric acid. Class 9
  4. Activity 9.3 To verify the law of conservation of mass by carrying out a chemical reaction. Class 9
  5. Sodium chloride (NaCl) has sodium and chlorine in the mass ratio sodium. Class 9
  6. Calculate the molecular mass of water (HaO). Class 9
  7. Calculate the molecular mass of nitric acid (HNO3). Class 9
  8. Activity 9.5 To check the solubility of some compounds in water and organic solvents. Class 9
  9. Calculate the formula unit mass of sodium oxide (Na2O). Class 9
  10. Calculate the formula unit mass of magnesium hydroxide, Mg(OH)2. Class 9
  11. Water can be obtained from various sources. Are all these samples of water chemically identical? Class 9
  12. A student burns 10 g of ethanol in an open beaker. After the reaction. Class 9
  13. A compound consists of 40% sulfur and 60% oxygen by mass. In a sample of the same compound. Class 9
  14. The Law of Definite Proportions holds true for compounds but not for mixtures. Class 9
  15. 2 g of hydrogen combines with 16 g of oxygen to form 18 g of water. Class 9
  16. Nitrogen has five valence electrons. Draw the structure of the nitrogen molecule (N2). Class 9
  17. Show the formation of the following molecules. Carbon dioxide, Hydrogen sulfide. Class 9
  18. Neon (atomic number 10) neither transfers nor shares its valence electrons. Explain. Class 9
  19. What kind of ion will oxygen (O) form? Class 9
  20. Show the formation of cations of potassium (K) and calcium (Ca) atoms, and the formation. Class 9
  21. Illustrate how sodium sulfide (Na2S) is formed. Class 9
  22. Write the formula for the following. Sodium hydrogencarbonate. Class 9
  23. What type of chemical bond is present in a solid compound that does not conduct electricity. Class 9
  24. Metal M, with two electrons in its valence shell (M shell), reacts with oxygen. Class 9
  25. Find the molecular mass of methane (CH4). Class 9
  26. Find the formula unit mass of magnesium hydroxide, Mg(OH)2. Class 9
  27. A particular element (A) has one electron in its third shell. There is another element (B). Class 9
  28. An element X has six electrons in its outer shell and forms a diatomic molecule. Class 9
  29. Elements are made up of molecules and compounds are made up of atoms. Class 9
  30. Write the formulae of the compounds formed from the following pairs of ions. Class 9
  31. Determine the formula unit mass of the following substances. Class 9
  32. Write the formulae for the compounds formed by the reaction of. Class 9
  33. Complete the table by writing the formulae of the compounds formed by the cations. Class 9
  34. 5.3 g of sodium carbonate and 6.0 g of acetic acid react to produce 2.2 g of carbon dioxide. Class 9
  35. Two elements, A and B, have the following configurations. Class 9
  36. Copper sulfate conducts electricity in the molten state but not in the solid state. Class 9
  37. The species 27Al, 80Br- and 201Hg2+ have 13, 35 and 80 protons, respectively. Class 9

Class 9 Science Exploration Chapter 10 Sound Waves Characteristics and Applications Class 9 Question Answer

  1. Activity 10.1 Let us explore to show that sound is produced due to vibrations of objects. Class 9
  2. Activity 10.2 Let us explore to show that sound is produced due to vibrations using a tuning fork. Class 9
  3. Activity 10.3 Let us investigate to show that sound can travel through solids. Class 9
  4. Activity 10.4 Let us investigate to show that sound can travel through liquids and needs a medium. Class 9
  5. Activity 10.5 Let us observe to study how waves (disturbances) travel through a medium. Class 9
  6. Activity 10.6 Let us experiment to show that sound is a form of energy. Class 9
  7. Activity 10.7 Let us experiment to study how the frequency of sound changes. Class 9
  8. From graph of sound wave propagating in steel, find its wavelength. Class 9
  9. Activity 10.8 Let us experiment to study how frequency affects hearing and determine the range. Class 9
  10. You clap in hall and hear an echo after 0.5 s. If speed of sound in air is 340 m/s. Class 9
  11. Two astronauts are repairing the arm of a space station together during a spacewalk. Class 9
  12. Explore various ways of producing sound. Class 9
  13. We cannot hear the sound of a bell ringing in a closed jar after most of the air is pumped out. Class 9
  14. When sound travels from a tuning fork to your ear, which of the following actually reaches your ear? Class 9
  15. Conduct Activity 1 once again with a thick rubber band and then with a thin rubber band. Class 9
  16. For the sound wave represented by the graph shown in Fig., what is half of its wavelength? Class 9
  17. Two friends are standing along a steel fence at a distance of 340 m from each other. Class 9
  18. An experiment is being set up that requires echoes to arrive at least 0.2 s. Class 9
  19. What if the speed of sound in air depended on its frequency? Class 9
  20. Which observation best supports the idea that sound is a mechanical wave? Class 9
  21. If 20 compressions pass a point in 4 seconds, the frequency is. Class 9
  22. Graphs representing two sound waves are given in Fig. If the scales on the X and Y axes. Class 9
  23. The sound waves emitted by three sources A, B and C are represented in Fig. Class 9
  24. Draw a graph to represent a sound wave for which the density amplitude. Class 9
  25. In a movie, while showing the explosion of a spacecraft in space, a flash of light. Class 9
  26. A ship searching for a sunken ship sent a sonar signal and detected an echo after 5 s. Class 9
  27. The speed of sound in air is about 331 m s-1 at 0 °C and nearly 344 m s-1 at 22 °C. Class 9
  28. The graphical representation of two sound waves A and B propagating at the same speed. Class 9
  29. Two identical sound sources are placed at A and B—one in air and one submerged in water. Class 9

Class 9 Science Exploration Chapter 11 Reproduction How Life Continues Class 9 Question Answer

  1. Activity 11.1 Let us explore to study and observe the methods of vegetative propagation. Class 9
  2. Activity 11.2 Let us explore to study the process of budding in yeast. Class 9
  3. Activity 11.3 Let us experiment to study growth of bread mould, fungus (Rhizopus). Class 9
  4. Activity 11.4 Let us explore to determine how many unique combinations of characters. Class 9
  5. How many combinations can you make with just these three pairs of characters? Class 9
  6. Activity 11.5 Let us explore to observe and identify the different parts of flowers. Class 9
  7. Activity 11.6 Let us investigate to study the role of pollination in fruit. Class 9
  8. Activity 11.7 Let us find out to compare different pollination strategies. Class 9
  9. When does a farmer prefer asexual or sexual methods of reproduction for crops production? Class 9
  10. Moulds on bread may look unpleasant but fungi benefit society greatly. Class 9
  11. In a china-rose (hibiscus or gudhal) plant, a pollen tube grows and continues. Class 9
  12. A farmer plants two varieties of maize side by side, but notices that seeds. Class 9
  13. Ravi suddenly notices that he is growing taller rapidly, his shoulders are broadening. Class 9
  14. What protective devices can be used during sexual activity to reduce the spread of STIs? Class 9
  15. If a couple uses oral contraceptive pills but not condoms, which risks remain and why? Class 9
  16. In many animals, the young ones can walk or find food soon after birth. Class 9
  17. A flower’s anthers are removed before it matures. Later, pollen from another plant. Class 9
  18. The zygote formed after fertilisation immediately attaches to the uterus wall. Class 9
  19. Why does asexual reproduction produce offsprings that are genetically identical to the parent? Class 9
  20. Why are flowers that bloom at night white or light in colour as compared to flowers. Class 9
  21. If all flowers in a type of plant were only capable of self-pollination. Class 9
  22. A farmer wants to produce a large number of genetically identical plants quickly. Class 9
  23. Suresh prepares slides with pollen grains in different sugar concentrations. Class 9
  24. Look at the picture given below and think in line with the given prompts. Class 9
  25. In the lower Himalayan region of northern India, apples are an important cash crop. Class 9
  26. A student claims, “In humans, ovulation always happens on day 14 of the menstrual cycle”. Class 9

Class 9 Science Exploration Chapter 12 Patterns in Life Diversity and Classification Class 9 Question Answer

  1. Activity 12.1 Let us compare and classify Fig. shows the diversity of animals in an ecosystem. Class 9
  2. Activity 12.2 Let Us Read A Case Study. The Pakke Tiger Reserve in Arunachal Pradesh is a forest. Class 9
  3. Activity 12.3 Let us study the concept map. Class 9
  4. Activity 12.4 Let us explore to observe different shapes of bacteria and cyanobacteria. Class 9
  5. Activity 12.5 Let us make to prepare a hay infusion and observe microorganisms. Class 9
  6. Activity 12.6 Let us explore to observe bryophytes and compare them with the leave. Class 9
  7. Activity 12.7 Let us compare to compare the cross section of a fern stem. Class 9
  8. Activity 12.8 Let us discuss to study different leaves, observe their shape and venation. Class 9
  9. Activity 12.9 Let us study the salient features of each plant group. Class 9
  10. What do you understand by biodiversity? Class 9
  11. On what basis are plants and animals classified? Class 9
  12. If many organisms share common features, could they also share a common ancestry? Class 9
  13. How can a single-celled organism carry out all its life processes when billions of cells. Class 9
  14. Which plant features reduce their dependence on water but still require moist conditions? Class 9
  15. How do seeds and fruits affect, where and how plants can survive? Class 9
  16. Does the term 'biodiversity' relate only to the variety of organisms, encompass other elements? Class 9
  17. If you find a new organism in a pond, what features will you observe to classify it and why? Class 9
  18. Why do genetic studies provide deep information about living beings? Class 9
  19. How can changes in climate affect the biodiversity? Class 9
  20. Why do classification systems keep changing? Does that indicate how science works? Class 9
  21. Meena and Hari observed an animal in their garden. Hari called it an insect while Meena. Class 9
  22. Sponges represent one of the simplest animal body plans. Their bodies lack true tissues. Class 9
  23. Observe two different animals in your immediate environment. Class 9
  24. How would a scientist justify choosing cellular organisation as a more fundamental. Class 9
  25. How does the diversity of organisms contribute to the balance and stability of an ecosystem? Class 9
  26. If all unicellular organisms were grouped into a single kingdom, what problems would arise? Class 9
  27. Viruses were studied in earlier classes. Why are they not placed in any of the five kingdoms? Class 9
  28. If you were asked to revise the five kingdom classification, would you create a separate category. Class 9
  29. Both pteridophytes and bryophytes lack flowers and seeds, yet they are placed in different groups. Class 9
  30. A scientist discovers a new organism with the characteristic features of locomotion. Class 9
  31. A researcher identified a unicellular eukaryotic organism as fungi. Class 9
  32. During a long-term ecological study, students examined organisms collected. Class 9
  33. Organisms R and Q are both eukaryotic, yet they are placed in different kingdoms. Class 9
  34. Organism T does not fit into any of the five kingdoms. Class 9
  35. If classification were based only on habitat, which organisms might be incorrectly. Class 9
  36. Imagine scientists discover a new organism that is multicellular, eukaryotic. Class 9

Class 9 Science Exploration Chapter 13 Earth as a System Energy Matter and Life Class 9 Question Answer

  1. Activity 13.1 Let us explore. Observe the features of the Earth as shown in fig. Class 9
  2. How much solar energy will a 1 m2 area receive in one hour if insolation = 1 kWm-2? Class 9
  3. Activity 13.2 Let us find out to complete the following table using information. Class 9
  4. How does the warming of Arabian Sea water affect the southwest monsoon in India? Class 9
  5. What might happen to coastal cities in India if glaciers and polar ice keep melting faster? Class 9
  6. Visit the website given below and study the effect of the concentration of greenhouse gas. Class 9
  7. How does the cool mountain breeze benefit agriculture activity. Class 9
  8. What happens to the warm surface of water from the equator as it travels. Class 9
  9. The CO2 dissolved in the ocean is disturbed when the global temperature increases. Class 9
  10. What would happen to plants and animals on Earth if the biogeochemical cycles. Class 9
  11. Discuss how human activities increase the concentration of greenhouse gases. Class 9
  12. Choose the most appropriate option to describe the role of biogeochemical cycles. Class 9
  13. Explain how climate change affects the water cycle. Illustrate with examples. Class 9
  14. Describe how albedo affects the Earth’s surface temperature and its climate. Class 9
  15. How are mountain and valley breezes formed? Suppose there are two mountains. Class 9
  16. You have witnessed weather phenomena, such as winds, storms, rainfall, etc. Class 9
  17. Explain the processes involved in the nitrogen cycle. Class 9
  18. What are the impacts of deforestation on the Earth’s oxygen and carbon cycles? Class 9
  19. Explain with suitable diagram the path that carbon takes to go back to the atmosphere. Class 9
  20. Why is an excess of CO2 in the atmosphere considered undesirable. Class 9
  21. How is heat lost from the surface of the Earth? What is its significance? Class 9
  22. If the Earth were a flat disc instead of a sphere, how would the patterns of solar. Class 9
  23. Suppose there is a rise in atmospheric temperature on Earth. Class 9
  24. Explain how the Earth’s atmosphere helps in maintaining a suitable temperature. Class 9
  25. Describe the interrelationship between different spheres of the Earth. Class 9