Class 10 Biology
Exemplar Problems MCQ II
In our country, there are attempts to increase the height of several existing dams like Tehri and Almati, dams across Narmada. Choose the correct statements among the following that are a consequence of raising the height of dams
- Terrestrial flora and fauna of the area is destroyed completely
- Dislocation of people and domestic animals living in the area
- Valuable agricultural land may be permanently lost
- It will generate permanent employment for people
- (i) and (ii)
- (i), (ii) and (iii)
- (ii) and (iv)
- (i), (iii) and (iv)
Answer: (b) (i), (ii) and (iii)
Explanation: A dam destroys terrestrial flora and fauna because a large area gets submerged. It also results in dislocation of a huge population. Vast tracts of agricultural land are permanently lost due to coming under the catchment area.
Expand the abbreviation GAP
- Governmental Agency for Pollution Control
- Gross Assimilation by Photosynthesis
- Ganga Action Plan
- Governmental Agency for Animal Protection
Answer: (c) Ganga Action Plan
Select the incorrect statement
- Economic development is linked to environmental conservation
- Sustainable development encourages development for current generation and conservation of resources for future generations
- Sustainable development does not consider the view points of stakeholders
- Sustainable development is a long planned and persistent development
Answer: (c) Sustainable development does not consider the view points of stakeholders
Explanation: The examples of Arabari forests and Chipko Movement show that involvement of all stakeholders is mandatory for the success of any conservation effort.
Which of the following is not a natural resource?
- Mango tree
- Wooden house
Answer: (d) Wooden house
Explanation: A house is man-made; no matter if it is wooden or made from bricks and mortar.
Select the wrong statement
- Forests provide variety of products
- Forests have greater plant diversity
- Forests do not conserve soil
- Forests conserve water
Answer: (c) Forests do not conserve soil
Explanation: Forest plays important role in soil conservation because trees hold the topsoil in place.
Arabari forests of Bengal is dominated by
Answer: (b) Sal
Ground water will not be depleted due to
- thermal power plants
- loss of forest, and decreased rainfall
- cropping of high water demanding crops
Answer: (a) Afforestation
Explanation: Afforestation will help in recharge of groundwater and thus it will have a positive impact on water table.
Opposition to the construction of large dams is due to
- social reasons
- economic reasons
- enviromental reasons
- all the above
Answer: (d) All of the above
Explanation: Displacement of people and loss of livelihood are the social reasons. Huge cost is the economic reason. Destruction of flora and fauna in the catchment area is the environmental reason.
Khadins, Bundhis, Ahars and Kattas are ancient structures that are examples for
- grain storage
- wood storage
- water harvesting
- soil conservation
Answer: (c) Water harvesting
Pick the right combination of terms which has no fossil fuel.
- Wind, ocean and coal
- Kerosene, wind and tide
- Wind, wood, sun
- Petroleum, wood, sun
Answer: (c) Wind, wood, sun
Select the eco-friendly activity among the following
- Using car for transportation
- Using polybags for shopping
- Using dyes for colouring clothes
- Using windmills to generate power for irrigation
Answer: (d) Using windmills to generate power for irrigation
Explanation: Using windmills involves using wind energy which is a renewable source of energy.
It is important to make small check dams across the flooded gullies because they
- hold water for irrigation
- hold water and prevent soil erosion
- recharge ground water
- hold water permanently
- (i) and (iv)
- (ii) and (iii)
- (iii) and (iv)
- (ii) and (iv)
Answer: (b) (ii) and (iii)
Explanation: Check dams cannot hold water permanently and hence there cannot be continuous supply for irrigation. However, check dams facilitate the recharge of groundwater by holding water for some time.