Environment GKGeneral Knowledge 100+ MCQ & Answer Environment General Knowledge | page-04 | General Knowledge MCQ And Answer February 1, 2025 DSN MARATHI 31. The true end of any food chain is the A. Decomposer B. Predator C. Consumer D. Human Answer Option : A 32. The second trophic level in a lake is A. Phytoplankton B. Zooplanktons C. Fishes D. Benthos Answer Option : B 33. Which of the following can act as a pioneer species in a xerach succession A. Lichens B. Humans C. Herbs D. Animals Answer Option : A 34. Energy flow in an ecosystem is A. Bidirectional B. Unidirectional C. Multidirectional D. All rounds Answer Option : C 35. Which of the following is an example of a man-made ecosystem A. Tissue culture B. Herbarium C. Aquarium D. Forest Answer Option : C 36. Pyramid of energy in a pond ecosystem is always A. Inverted B. Upright C. Linear D. Irregular Answer Option : B 37. If in a population, natality is balanced by mortality, then there will be A. Decrease in population growth B. Increase in population growth C. Zero population growth D. Over population Answer Option : C 38. In a pyramid of numbers in grassland ecosystems, the largest population is that of A. Herbivores B. Primary consumers C. Secondary consumer D. Producers Answer Option : A 39. Which of these belong to the category of primary consumers in grazing food chain A. snakes and frogs B. Insects and cattle C. Eagle and snakes D. Eagle and snakes Answer Option : D 40. The pyramid of energy is always upright for any ecosystem, this situation indicates that A. Herbivores have better energy conversion efficiency than carnivores B. Producers have the lowest energy conversion efficiency C. Carnivores have a better energy conversion efficacy than herbivores D. Energy conversion efficiency is same at all trophic levels Answer Option : D
31. The true end of any food chain is the A. Decomposer B. Predator C. Consumer D. Human Answer Option : A
32. The second trophic level in a lake is A. Phytoplankton B. Zooplanktons C. Fishes D. Benthos Answer Option : B
33. Which of the following can act as a pioneer species in a xerach succession A. Lichens B. Humans C. Herbs D. Animals Answer Option : A
34. Energy flow in an ecosystem is A. Bidirectional B. Unidirectional C. Multidirectional D. All rounds Answer Option : C
35. Which of the following is an example of a man-made ecosystem A. Tissue culture B. Herbarium C. Aquarium D. Forest Answer Option : C
36. Pyramid of energy in a pond ecosystem is always A. Inverted B. Upright C. Linear D. Irregular Answer Option : B
37. If in a population, natality is balanced by mortality, then there will be A. Decrease in population growth B. Increase in population growth C. Zero population growth D. Over population Answer Option : C
38. In a pyramid of numbers in grassland ecosystems, the largest population is that of A. Herbivores B. Primary consumers C. Secondary consumer D. Producers Answer Option : A
39. Which of these belong to the category of primary consumers in grazing food chain A. snakes and frogs B. Insects and cattle C. Eagle and snakes D. Eagle and snakes Answer Option : D
40. The pyramid of energy is always upright for any ecosystem, this situation indicates that A. Herbivores have better energy conversion efficiency than carnivores B. Producers have the lowest energy conversion efficiency C. Carnivores have a better energy conversion efficacy than herbivores D. Energy conversion efficiency is same at all trophic levels Answer Option : D
