MIUN Free NEET Quiz Unit 10

1. Parasites enhance the survival, growth, and reproduction of the host, thereby increasing its population density.

2. No population of any species in nature has at its disposal limited resources to permit exponential growth.

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

4. In all communities, many interactive linkages exist, although all are readily apparent.

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

6. Many ecologists regard the entire biosphere as a global ecosystem, as a composite of all local ecosystems on Earth.

7. An ecosystem is a structural and functional unit of nature, and it comprises abiotic and biotic components.

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

9. Neutral interaction – ‘0’ sign.

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

11. Our countries in situ conservation efforts are reflected in its 14 biosphere reserves, 90 national parks, > 450 wildlife sanctuaries and many sacred groves.

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

13. Primary productivity does not accurately measure the capture of solar energy or biomass production by producers, as these processes are highly variable and context-dependent.

14. In our planet, immense heterogeneity exists only at the species level.

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

16. The bee know which flower has nectar because the nectar is the food for them and also essential to make honey.

17. The malarial parasite needs a vector (mosquito) to spread to reproduce.

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

19. Liver fluke – intermediate host – snail.

20. Productivity, decomposition, energy flow, and nutrient cycling are the four important components of an ecosystem.

21. It is believed that communities with low diversity tend to be more variable, less productive, and less resistant to biological invasions.

22. Plants have developed a wide range of morphological and chemical defences against herbivory.

23. Among the various levels of biological organisation, the simplest living one is not the population.

24. Although India has 8.1 per cent of the global species diversity, its share of the per cent of the world’s land area 2.4 per cent.

25. When a host fish species becomes extinct, its unique assemblage of parasites also meets the same fate.

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

27. Populations increase through births and immigration and decrease through deaths and emigration.

28. Ramdeo Misra’s groundbreaking research provided key insights into tropical communities and their succession, the environmental responses of plant populations, and the processes of productivity and nutrient cycling in tropical forest and grassland ecosystems. Misra also introduced the first postgraduate course in ecology in India.

29. Abiotic components are inorganic materials (air, water, and soil), whereas biotic components are producers, consumers, and decomposers.

30. In in situ conservation, the endangered species are protected in their natural habitat so that the entire ecosystem is protected.

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

32. An ecosystem cannot be visualised as a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment.

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

34. Lantana — cichlid fish extinction.

35. The annual gross primary productivity of ocean is 30% (dry weight).

36. Among recorded animals, insects are the most species-rich taxonomic group, making up more than 70 per cent of the total.

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

38. 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.

39. 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.

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

41. Ecology helps explain the interactions among organisms.

42. Population growth is determined solely by external factors and is not influenced by resource availability or environmental conditions.

43. Interspecific interactions arise from the interaction of populations of same species.

44. The rationales for conserving biodiversity span narrow utilitarian, broad utilitarian, and ethical considerations.

45. 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.

46. Species richness is influenced by the area of a region, with the species-area relationship typically following a rectangular hyperbolic function.

47. Liver fluke – intermediate host – human.

48. Intraspecific interactions arise from the interaction of populations of same species.

49. 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 IQ of the human that he would encounter.

50. Important explanation for the species richness of the tropics is tropics receive more solar energy, which contributes to greater productivity.