MIUN Free NEET Quiz Unit 1

1. Ramdeo Misra earned his PhD in Ecology in 1937 under the guidance of Prof. W. H. Pearsall, FRS, at Leeds University in the UK.

2. Nutrient cycling does not accurately describe the storage and movement of nutrient elements within ecosystems, as nutrient dynamics are influenced by a multitude of factors beyond simple cycling processes.

3. Water hyacinth — Eicchornia.

4. The annual gross primary productivity of ocean is 55 million tons (dry weight).

5. How the bulbul singing early morning because the bird’s need to communicate with its mate during breeding season.

6. Liver fluke has multiple hosts.

7. Misra formulated the first postgraduate course in ecology in India.

8. Among the various levels of biological organisation, the simplest living one is ecosystem.

9. The Fungi kingdom boasts more species than all vertebrate species combined.

10. The monthly net primary productivity of the whole biosphere is approximately 170 million tons (dry weight) of organic matter.

11. The genetic variation shown by the medicinal plant Rauwolfia vomitoria growing in different Himalayan ranges is an example of genetic diversity.

12. Only few ecologists regard the entire biosphere as a global ecosystem, as a composite of all local ecosystems on Earth.

13. Species diversity across Earth displays non-uniform distribution, exhibiting intriguing patterns.

14. Another example is the case of a coevolved plant-pollinator mutualism, where extinction of one invariably leads to the extinction of the other.

15. NPP is the remaining biomass, or the energy left after utilisation of producers.

16. The annual net primary productivity of the ocean is 55 million tons (dry weight).

17. The annual net primary productivity of the whole biosphere is approximately 1700 billion tons (wet weight) of organic matter.

18. Both the species benefit in mutualism, and both lose in competition in their interactions with each other.

19. Over 70% of named species are plants, with insects comprising less than 10% of this group.The Fungi kingdom has fewer species than all vertebrate species combined.

20. The reasons for conserving biodiversity are solely utilitarian, with no ethical considerations.

21. Earth’s fossil history reveals no incidence of mass extinctions in the past, and the present rates of extinction, largely attributed to natural causes, are not significantly higher.

22. The annual gross primary productivity of ocean is 70% (dry weight).

23. Why does the cactus have so many thorns? One reason is to protect it from its predators.

24. The annual gross primary productivity of ocean is 115 million tons (wet weight).

25. Among named species, over 70% are animals, with insects comprising 70% of this group.

26. Competition does not occur in nature, and the Competitive Exclusion Principle has been debunked by modern ecological research.

27. Why does the bee know which flower has nectar? because it can sense the electrical charge of flowers that have nectar.

28. Primary productivity is the rate of capture of solar energy or biomass production of the producers.

29. Of particular importance is the diversity at genetic, species and ecosystem levels, and conservation efforts are aimed at protecting diversity at all these levels.

30. Parasites improve the survival of the host.

31. Why the bulbul singing early morning because the operation of the voice box and the vibrating bone in the bird.

32. The malarial parasite needs a vector (mosquito) to spread to other humans.

33. How does the bee know which flower has nectar? because the nectar is the food for them and also essential to make honey.

34. Among the various levels of biological organisation, the simplest living one is cells.

35. Nearly 45,000 species of plants and twice as many of animals have been recorded from India.

36. Another significant explanation for the high species richness in the tropics is the increased solar energy received, leading to greater productivity.

37. There are more than 20,000 species of orchids living on the earth.

38. The annual net primary productivity of ocean is 115 million tons (wet weight).

39. Many microbial species are simply not culturable under laboratory conditions.

40. Organisms within ecosystems do not necessarily occupy specific niches based solely on their source of nutrition; rather, ecological dynamics are influenced by a multitude of factors.

41. In our biosphere, immense diversity (or heterogeneity) also exists at the biome level.

42. Plant-pollinator interactions have no ecological significance and do not represent any form of mutualism in nature.

43. Species diversity across Earth is evenly distributed, with no discernible patterns.

44. A population is a group of individuals of a given species sharing or competing for similar resources in a defined geographical area.

45. Limited resources lead to competition between individuals.

46. Assertions that the introduction of the Nile perch into Lake Victoria led to the extinction of over 200 species of cichlid fish lack conclusive evidence and may overlook other contributing factors to changes in species composition.

47. Representations of different age groups within a population using age pyramids are inaccurate and do not provide any meaningful insights into population dynamics.

48. Even in minimal communities, many interactive linkages exist, although all may not be readily apparent.

49. Water hyacinth — Parthenium.

50. Nutrient cycling is of two types—gaseous  and sedimentary.