Class 12 Biology Chapter 13 Organisms And Populations Quiz 5 (17 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. An animal that eats other animals that eat plants

Correct Answer: C) Secondary consumer.

2. Living and nonliving things interacting in an environment is called:

Correct Answer: D) Ecosystem.

3. A population's ..... determines whether the population size increases, decreases, or stays the same.

Correct Answer: B) Growth rate.

4. Under ideal conditions with unlimited resources, a population will grow .....

Correct Answer: D) Exponentially.

5. Which of the following is a partial root parasite?

Correct Answer: A) Sandal wood.

6. When two or more individuals or populations attempt to obtain a single resource

Correct Answer: A) Competitive interaction.

7. In a pond there were 40 lotus plants. after a year, the number rose to 56. Calculate the birth rate of a lotus plant.

Correct Answer: B) 0.4.

8. Which is an example of an ABIOTIC factor in a pond environment?

Correct Answer: A) The water.

9. Which of the following is an ABIOTIC factor?

Correct Answer: B) Air.

10. Amensalism is an association between two species where:

Correct Answer: B) One species is harmed and other is unaffected.

11. Which of the following is an abioitic factor that could affect biotic factors?

Correct Answer: B) Length of daylight.

12. What is a biotic factor?

Correct Answer: A) Anything that is living, or once living.

13. When an organism depends on a factor for survival

Correct Answer: C) Dependent interaction.

14. What is the second least complex section of the levels of organization?

Correct Answer: A) Population.

15. The factors that can affect population size are

Correct Answer: D) All answers are correct.

16. What is the least complex section of the levels of organization?

Correct Answer: A) Organism.

17. A population can ..... when its birth rate is higher than its death rate.

Correct Answer: C) Grow.