| 51. | To whom does the credit of first propounding the word ecology go? |
A. to brown | |
B. to Aristotle | |
C. to Khurana | |
D. to Ritter |
| 52. | Ecology is the study of the interrelationships between the following – |
A. organisms and environment | |
B. man and forest | |
C. soil and water | |
D. husband and wife |
| 53. | Autoecology means – |
A. effect of soil on vegetation | |
B. ecological study of individual organism | |
C. effect of sublimation on vegetation | |
D. effect of temperature on vegetation |
| 54. | Who introduced the term ‘Ecosystem’? |
A. Forbes | |
B. varnasuke | |
C. thinemann | |
D. tensley |
| 55. | Which one of the following is the best description of the word ‘ecosystem’? |
A. community of organisms interacting with each other | |
B. the part of the earth that is inhabited by living organisms | |
C. community of organisms as well as the environment in which they live | |
D. flora and fauna of a geographical area |
| 56. | What are the two components of ecosystem? |
A. weeds and microbes | |
B. organic and inorganic | |
C. plants and light | |
D. plants and animals |
| 57. | Which of the following is an abiotic component of the ecosystem? |
A. bacteria | |
B. clarella | |
C. water | |
D. human |
| 58. | Which of the following series is correct about the flow of energy in an ecosystem? |
A. producer-decomposer-consumer | |
B. decomposer-consumer-producer | |
C. producer-consumer-decomposer | |
D. consumer-producer-decomposer |
| 59. | Food chain is formed – |
A. from producers, consumers and decomposers | |
B. from producers, carnivores and decomposers | |
C. from producers and primary consumers | |
D. From producers, vegetarians and non-vegetarians |
| 60. | The primary consumer in a chain is – |
A. producer | |
B. Vegetarian | |
C. non vegetarian | |
D. decomposer |