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Organisms and Populations : Biology (Class 12th) Revision Test | MCQs for NEET

Diksha Bhatla May 17, 20224.6k views 25 Questions

This practice test includes 25 important multiple choice questions from the chapter – Organisms And Populations (Class 12th Biology).

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Your Score: 0 Total: 25 Questions

Questions

Q1. For human population, the age pyramids generally show age distribution of
📘 Explanation: the age pyramids generally show age distribution of Of males and females
Q2. The size of the population tells us a lot about its status in the
📘 Explanation: The size of the population tells us a lot about its status in the Habitat
Q3. The number of deaths in the population during a given period is referred to
📘 Explanation: The number of deaths in the population during a given period is referred to Mortality
Q4. The number of birth during a given period in the population that are added to the initial density is referred to
📘 Explanation: It is referred as Natality
Q5. Parasites that live inside the host body at different sities are called
📘 Explanation: Parasites that live inside the host body at different sities are called Endo parasites
Q6. Parasites that feed on the external surface of the host organism are called
📘 Explanation: Parasites that feed on the external surface of the host organism are called Ecto parasites
Q7. If one species is harmed whereas the other is unaffected is called
📘 Explanation: It is called as Commensalism.
Q8. The interaction where one species is benefitted and the other is neither benefitted nor harmed is called
📘 Explanation: It is called as Commensalism.
Q9. One species benefit in
📘 Explanation: Both (a) and (b)
Q10. Both species lose in
📘 Explanation: Both species lose in Competition
Q11. Both the species benefit in
📘 Explanation: Both the species benefit in Mutualism
Q12. A stage of suspended development is called
📘 Explanation: A stage of suspended development is called Diapause
Q13. To avoid summer-related problems – heat and desiccation by organism is called
📘 Explanation: To avoid summer-related problems – heat and desiccation by organism is called Aestivation
Q14. Winter sleep is also called as
📘 Explanation: Winter sleep is also called as Hibernation
Q15. The shifting of an organism temporarily from the stressful habitat to a more hospitable area and return when stressful period is over is called
Q16. Habitat together with functions of a species constitute its:
📘 Explanation: Habitat together with functions of a species constitute its Ecological niche
Q17. The maximum growth rate occurs in
📘 Explanation: Exponential, phase
Q18. In which one of the following habitats, does the diurnal temperature of soil surface view most?
📘 Explanation: In desert the diurnal temperature of soil surface view most.
Q19. Science linking heredity with environment is:
📘 Explanation: Science linking heredity with environment is Genecology
Q20. Submerged hydrophytes have disseced leaves for
📘 Explanation: For Reducing effect pf water currents
Q21. Water holding capacity is maximum in
📘 Explanation: Water holding capacity is maximum in Clay
Q22. Animals undergo inactive stage during winters. It is called
Q23. Praying mantis is a good example of
📘 Explanation: Praying mantis is a good example of Camouflage
Q24. Animals have innate ability to escape from predation. Select the incorrect example:
📘 Explanation: Poison fangas of snakes is incorrect
Q25. Ozone protects biosphere from high energetic:
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