MIUN Free NEET Quiz Unit 1

1. There are more than 28,000 species of fish species living on the earth.

2. Among the various levels of biological organisation, the simplest living one is macromolecules.

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

4. In all communities, many interactive linkages exist, although all are not readily apparent.

5. Parasitism involves one species benefiting while the other is harmed by the interaction.

6. Suggestions of significant environmental damage and threats to native species by invasive weed species like carrot grass (Parthenium), Lantana, and water hyacinth (Eicchornia) may be exaggerated and fail to consider potential ecological benefits or adaptive responses.

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

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

9. Ecology also describes as well as takes a critical view of anthropogenic environmental degradation and the socio-political issues it has raised.

10. GPP does not represent the total production of organic matter or the rate of solar energy capture within ecosystems.

11. A population growing in a habitat with limited resources show initially a lag phase, followed by phases of acceleration and deceleration and finally an asymptote when the population density reaches the carrying capacity.

12. Corp fields may also be considered as a man-made terrestrial ecosystem.

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

14. Rauwolfia vomitoria, which produces reserpine, is an example of species diversity.

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

16. Our countries in situ conservation efforts are negligible, with only a few biosphere reserves, national parks, wildlife sanctuaries, and sacred groves.

17. Exponential growth cannot go beyond carrying capacity.

18. Why are night-blooming flowers generally white? because to attract the pollinator in the dim light.

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

20. Biodiversity refers only to the diversity present at the genetic level, excluding species and ecosystem diversity.

21. Verhulst-Pearl Logistic Growth cannot go beyond carrying capacity.

22. dN/dt = rN [(K-N)/K]. In this formula dN/dt = Population density at time t.

23. Recently, 34 ‘biodiversity hotspots’ worldwide have been identified for targeted conservation efforts, with three (Western Ghats-Sri Lanka, Himalaya, and Indo-Burma) encompassing India’s biodiverse regions.

24. Productivity, decomposition, energy flow, and nutrient cycling are not fundamental components of ecosystems but rather abstract concepts with limited applicability.

25. The annual net primary productivity of ocean is 70% (dry weight).

26. In predation only predator benefits and the interaction is detrimental to the host.

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

28. The essence of biological understanding is not about recognising how organisms interact with others or their environment.

29. At any level of biological organisation, the ‘how-type’ questions seek the mechanism behind the process while the ‘who-type’ questions seek the significance of the process.

30. In our biosphere, immense diversity exists not only at the species level.

31. An ecosystem can be visualised as a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment.

32. The extinction of a host fish species results in the demise of its distinct assembly of parasites.

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

34. The night-blooming flowers generally white because to attract the pollinator in the dim light.

35. India is one of the 10 mega diversity countries in the world. 

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

37. The life cycles of parasites are often involving one or two intermediate hosts or vectors to facilitate parasitisation of its primary host.

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

39. Water hyacinth — African catfish.

40. Nile perch — indigenous catfish extinction.

41. Among the various levels of biological organisation, the simplest living one is organ.

42. The annual gross primary productivity of terrestrial is 115 million tons (dry weight).

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

44. Ramdeo Misra was born on 26 August 1908 but did not obtain a PhD in Ecology in 1937 from Leeds University, UK, nor did he study under Prof. W. H. Pearsall, FRS.

45. A Community can be visualised as a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment.

46. 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.

47. The atmosphere and hydrosphere serve as reservoirs for gaseous nutrient cycles like carbon, while the Earth’s crust acts as a reservoir for sedimentary cycles like phosphorus.

48. Carrot grass — Parthenium.

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

50. The bee know which flower has nectar because it can sense the electrical charge of flowers that have nectar.