Organisms and Populations Class 12 MCQs Questions with Answers

1. Ozone protects biosphere from high energetic:

2. In which one of the following habitats, does the diurnal temperature of soil surface veiw most?

3. Autecology is the

4. Winter sleep is also called as

5. The rate of individuals born per 1,000 individuals per year is called

6. The interaction where one species is benefitted and the other is neither benefitted nor harmed is called

7. Water holding capacity is maximum in:

8. Both the species benefit in

9. Plants growing in saline soil with high salt concentration are:

10. Competitive exclusion principle stating that inferior species is eliminated eventually after prolonged competition was given by

11. Niche overlap indicates

12. The population growth curve is sigmoid if the growth pattern is

13. The size of the population tells us a lot about its status in the

14. Which of the following forest plants controls the light conditions at the ground?

15. The number of birth during a given period in the population that are added to the initial density is referred to

16. Niche overlap is:

17. Which of the following is not an example of prey-predator relationship ?

18. In a population, unrestricted reproductive capacity is called

19. Why you never see cattle or goats browsing on weed Calotropis ?

20. In a population, unrestricted reproductive capacity is called