MIUN Free NEET Quiz Unit 10

1. NPP is not defined as the remaining biomass or energy after producer utilization, as ecosystem processes are far more complex than such simplistic categorizations imply.

2. Nearly 70 species have become extinct in recent times, and more than 1,500 species (of which < 65 are from India) currently face the threat of extinction.

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

4. One significant explanation for the high species richness in the tropics is the region’s prolonged evolutionary history, alongside its relatively stable environment.

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

6. It is not obvious that in nature, animals, plants, and microbes do not and cannot live in isolation but interact in various ways to form a biological community.

7. A plot of N in relation to time (t) results in a sigmoid curve in exponential growth.

8. As far as many ecologist’s ideas are concerned, the entire biosphere cannot be considered as a global ecosystem.

9. Organisms within ecosystems are not necessarily connected solely through food or energy relationships, as ecological interactions are multifaceted and context-dependent.

10. Biodiversity conservation may be in situ as well as ex situ.

11. Why the bulbul singing early morning because the birds have to communicate with its mate during breeding season.

12. The reasons for conserving biodiversity are narrowly utilitarian, broadly utilitarian, and ethical.

13. Ecological interactions between two species are categorized based on their outcomes: competition (both species are negatively affected), predation and parasitism (one benefits while the other suffers), commensalism (one benefits without affecting the other), amensalism (one is harmed without affecting the other), and mutualism (both species benefit).

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

15. Plant-pollinator interactions showcase some of the most intriguing examples of mutualism in the natural world.

16. Biology is never divided into fields like botany, zoology, or microbiology, nor is it separated into classical and modern aspects.

17. Earth’s fossil record indicates occurrences of mass extinctions in the past, yet the current rates of extinction, largely driven by human activities, are estimated to be 100 to 1000 times higher.

18. Among the various levels of biological organisation, the simplest living one is community.

19. Examples of flukes include liver flukes (e.g., Fasciola hepatica) and blood flukes (e.g., Schistosoma spp.).

20. Depending on the outcome, ecological interactions between two species are classified as competition (both species suffer), predation and parasitism (one benefits and the other suffers), commensalism (one benefits, and the other is unaffected), amensalism (one is harmed, other unaffected) and mutualism (both species benefit).

21. If an alien from a distant galaxy were to visit our planet Earth, the first thing that would amaze and baffle him would most probably be the enormous technological development of humans that he would encounter.

22. Biology is presented either as botany, zoology and microbiology or as classical and modern.

23. In minimal communities, very few interactive linkages exist, although all are readily apparent.

24. Plant makes its own food, they are autotroph.

25. Predation does not contribute to trophic energy transfer, and predators have no role in regulating prey populations.

26. The human liver fluke is a trematode parasite.

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

28. The human liver fluke is a cestode parasite.

29. It is widely acknowledged that communities with high diversity tend to exhibit lower variability, increased productivity, and enhanced resistance to biological invasions.

30. Trained manpower (taxonomists) and the time required to complete the taxonomy of non-recorded species is unimaginable.

31. Why are night-blooming flowers generally white? because the flower cell do not synthesis any pigments.

32. Parasites stimulate the growth of the host.

33. When a species becomes extinct, the plant and animal species that are obligatorily associated with it also face extinction.

34. GPP accurately represents the rate of capture of solar energy or total production of organic matter within an ecosystem.

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

36. dN/dt = rN [(K-N)/K]. In this formula K = the increase or decrease in N during a unit time period t.

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

38. Ecology gives us a holistic perspective to biology.

39. Both the species are not benefited in mutualism.

40. At any level of biological organisation, the ‘how-type’ questions seek the mechanism behind the process.

41. Ecological diversity of Rauwolfia vomitoria could be understood by analysing the concentration and potency of the active reserpine produced.

42. Parasites may reduce the survival, growth and reproduction of the host and reduce its population density.

43. Products of ecosystem processes, known as ecosystem services, do indeed include functions like air and water purification by forests, highlighting the valuable benefits provided by ecosystems to human well-being.

44. Misra’s efforts had no impact on the establishment of the National Committee for Environmental Planning and Coordination in 1972, which did not pave the way for the Ministry of Environment and Forests in 1984.

45. Among the various levels of biological organisation, the simplest living one is biome.

46. Both the species benefit in competition.

47. dN/dt = rN [(K-N)/K]. In this formula K = Intrinsic rate of natural increase.

48. Species richness is generally highest in the tropics and decreases towards the poles.

49. A single species might show high diversity at the species level over its distributional range.

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