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MCQs for Organisms and Populations
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MCQs for Organisms and Populations
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25 Questions

1. Which of the following factors has a negative effect on the population growth rate ?
2. Which of the following is not an example of preypredator relationship ?
3. Temperature is considered as the most ecologically relevant environmental factor because it affects of organisms.
4. Which of the following equations correctly represents Verhulst-Pearl logistic growth ?
5. Organisms that can maintain a constant internal temperature are called as
6. Which of the following is an incorrect match ?
7. If the age distribution is plotted for a population, the resulting structure is called as
8. The interdependent evolution of flowering plants and pollinating insects together is known as
9. Formation of tropical forests needs mean annual temperature and mean annual precipitation as
10. Which of the following exhibits mutualism ?
11. Parameters related to age structure include
12. _______ is an attribute of the organism (morphological, physiological, behavioural) to survive and reproduce in its habitat.
13. Which of the following statement is correct with regard to Bergmann's rule ?
14. Mango trees do not and cannot grow in temperate regions. The most important environmental factor responsible for it is
15. Lichens are the associations of
16. Exponential growth is observed in a population when
17. The population growth is generally described by the following equation. \(\frac{\mathrm{dN}}{\mathrm{dt}}=\mathrm{rN}\left(\frac{\mathrm{K}-\mathrm{N}}{\mathrm{K}}\right)\. What does V represent in the given equation ?
18. Competitive exclusion principle stating that inferior species is eliminated eventually after prolonged competition was given by
19. When we are in a hot room, we sweat profusely. It is a _______ means of maintaining homeostasis.
20. Many animals use the diurnal and seasonal variations in light intensity and photoperiod to time their
21. Which of the following forest plants controls the light conditions at the ground ?
22. Which of the following is an important adaptation of animals to the cold climate ?
23. Which of the following is not a part of an organism's physical environment ?
24. Different biomes are formed due to annual variations in _______ over the earth's surface.
25. Which one of the following organisms reproduces sexually only once in its life time ?

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