Our Home Earth A Unique Life Sustaining Planet Class 8 Assertion and Reason Questions

Our Home Earth A Unique Life Sustaining Planet Class 8 Assertion and Reason Questions

Our Home Earth A Unique Life Sustaining Planet Class 8 Assertion and Reason Questions

Following questions are of Assertion (A), Reason (R) type questions. Choose the correct answer from the following options:

(a) Both A and R are true, and R is the correct explanation of A.

(b) Both A and R are true, but R is not the correct explanation of A.

(c) A is true, but R is false.

(d) A is false, but R is true.

1. (A): The Earth's magnetic field protects life from harmful solar radiation.

(R): The magnetic field deflects charged particles from the sun, preventing them from reaching the Earth's surface.

Answer:

(a) Both A and R are true, and R is the correct explanation of A.

2. (A): Vegetative propagation is a common method of reproduction in plants.

(R): It allows plants to reproduce without the need for seeds.

Answer:

(a) Both A and R are true, and R is the correct explanation of A.

3. (A): Climate change can lead to unpredictable weather patterns.

(R): Climate change is caused solely by natural phenomena.

Answer:

(c) A is true, but R is false.

4. (A): The absence of an atmosphere would make Earth uninhabitable.

(R): An atmosphere is essential for maintaining temperature and providing oxygen for life.

Answer:

(a) Both A and R are true, and R is the correct explanation of A.

5. (A): Animals that lay many eggs have a higher chance of species survival.

(R): Laying many eggs increases the likelihood that some will survive to adulthood.

Answer:

(a) Both A and R are true, and R is the correct explanation of A.