| 61. | Whose details are given in ‘Red Data Book’? |
A. only extinct animals | |
B. endangered plants and animals | |
C. fossil plants | |
D. endangered plants only |
| 62. | The Red Data Book gives information about those castes which – |
A. is missing | |
B. is endangered | |
C. is dangerous | |
D. is rare |
| 63. | Which of the following is a threat to biodiversity? |
A. Fragile ecosystems such as mangroves and nam bhoomi | |
B. Inaccessible Habitat in the Himalayas | |
C. Destruction of natural habitats and vegetation and shifting cultivation | |
D. reserve biosphere |
| 64. | Which one of the following is the main reason for the ecological imbalance in India? |
A. deforestation | |
B. desertification | |
C. flood and famine | |
D. rainfall variability |
| 65. | The stability of the pond ecosystem depends on – |
A. on microbes and fish | |
B. on microorganisms and zooplankton | |
C. on fishes and reptiles | |
D. on producers and consumers |
| 66. | The main factor that decides the balance of nature is – |
A. human activities | |
B. Rabbits and Housing | |
C. environmental conditions | |
D. food availability |
| 67. | Which of the following is considered as a ‘Forest of World Heritage’? |
A. Nandan Kanan in Orissa | |
B. Kaziranga in Assam | |
C. beautiful forest in west bengal | |
D. Indian Botanic Garden, Shivpur in West Bengal |
| 68. | Which is the pigment which protects the plant from the harmful effects of ultraviolet rays? |
A. chlorophyll | |
B. carotenoids | |
C. phycocyanin | |
D. flastid |
| 69. | Where is most biodiversity found? |
A. in tropical forests | |
B. in temperate forests | |
C. in coniferous forests | |
D. in the arctic forests |
| 70. | What is Kaziranga famous for? |
A. for rhinoceros | |
B. for tiger | |
C. for the bird | |
D. for lion |