Our Home Earth A Unique Life Sustaining Planet Class 8 Fill in the Blanks
hardOur Home Earth A Unique Life Sustaining Planet Class 8 Fill in the Blanks
Our Home Earth A Unique Life Sustaining Planet Class 8 Fill in the Blanks
Question 1.
The process by which plants like ginger and potato grow from parts of themselves is called .............
Answer:
vegetative propagation
Question 2.
In sexual reproduction, male and female parents produce specialised reproductive cells
known as ............, which carry half of the genetic material.
Answer:
gametes
Question 3.
The variety of landforms, rocks, and soils on Earth is referred to as ............, which creates unique habitats for different types of life.
Answer:
geodiversity
Question 4.
Microorganisms like bacteria and amoeba reproduce asexually by ............, resulting in two identical individuals.
Answer:
binary fission
Question 5.
The balance of life on Earth is maintained through interactions between living organisms and their ............, which includes non-living components like soil, air, and water.
Answer:
environment.
Our Home Earth A Unique Life Sustaining Planet Class 8 True or False
Question 1.
Earth is the only planet known to sustain life as we know it.
Answer:
True
Question 2.
Plants can reproduce only through seeds.
Answer:
False
Question 3.
The Earth's crust is very thick compared to the rest of the planet.
Answer:
False
Question 4.
Asexual reproduction involves two parents.
Answer:
False
Question 5.
The balance of ecosystems is crucial for sustaining life on Earth.
Answer:
True
Our Home Earth A Unique Life Sustaining Planet Class 8 Match the Following
Question 1.
Match the items given in Column A with those given in Column B.
Ecosystems and their components:
| Column A | Column B |
| (i) Atmosphere | (a) Liquid water essential for life |
| (ii) Hydrosphere | (b) Solid part of the Earth |
| (iii) Geosphere | (c) Gases surrounding the Earth |
| (iv) Biosphere | (d) All living organisms on Earth |
Answer:
| Column A | Column B |
| (i) Atmosphere | (c) Gases surrounding the Earth |
| (ii) Hydrosphere | (a) Liquid water essential for life |
| (iii) Geosphere | (b) Solid part of the Earth |
| (iv) Biosphere | (d) All living organisms on Earth |
Question 2.
Match the items given in Column A with those given in Column B.
Types of reproduction:
| Column A | Column B |
| (i) Asexual reproduction | (a) Involves two parents |
| (ii) Sexual reproduction | (b) Produces identical offspring |
| (iii) Gametes | (c) Specialised reproductive cells |
| (iv) Zygote | (d) Result of fertilisation |
Answer:
| Column A | Column B |
| (i) Asexual reproduction | (b) Produces identical offspring |
| (ii) Sexual reproduction | (a) Involves two parents |
| (iii) Gametes | (c) Specialised reproductive cells |
| (iv) Zygote | (d) Result of fertilisation |