1. With reference to ‘Eco-Sensitive Zone’, which of the following statements is/are correct?

1. 1. It act as a buffer for further protection around Protected Areas (PAs) such as National Parks and Wildlife sanctuaries.
2. 2. It is notified under Environment (Protection) Act, 1986.
3. 3. The purpose of the declaration of ecosensitive zones is to prohibit all kinds of human activities, in those zones except agriculture.

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2. Which of the following correctly explain the term ‘sere(s)’?

3. Which of the following statements is/are true about Grasslands?

1. 1. These are formed over the regions of high temperature and high rainfall.
2. 2. Regular fires promote the growth of native grasses but limit the growth of trees.
3. 3. Grasslands are important for maintaining the richness and size of livestock population.
4. 4. The grasses found here can either be tall or short depending on the location of the grassland and the amount of rain they receive.

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4. Which of the following statements is/are true about Aquatic Ecosystem?

1. 1. Estuaries and mangrove swamps come under the category of freshwater ecosystems.
2. 2. Planktons are the microscopic plants which are controlled by the currents in the aquatic body.
3. 3. The growth of green algae on water bodies are the indication of eutrophication.

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5. Which of the following statements is/are true about the adaptation made in living organisms?

1. 1. Mammals from colder regions generally have shorter ears and limbs to minimise heat loss.
2. 2. In higher altitudes the human body produces a large number of RBCs in order to deal with low oxygen availability.
3. 3. In Tropical regions Plants have shallow roots to help capture nutrients from the top level of soil which is rich in humus.

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6. Raijiv Gandhi Environment Award is given for outstanding contributions in which of the following field?

7. Which of the following statements is/are true about Ecotone?

1. 1. It is a zone of junction of two or more diverse ecosystems.
2. 2. Both mangrove forests and grasslands are the examples of Ecotone.
3. 3. Edge effect occurs when the territorial size of ecotone is much larger than the adjacent ones.

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8. Which of the following statements related to the cell organelles is/are incorrect?

9. Soil pH refers to the degree of soil acidity or alkalinity. Which of the following are the sources of acidity in the soil?

1. 1. Excess rainfall leaches base cation from the soil.
2. 2. Outflow of waste from metal mines or coal mines increases acidity.
3. 3. Weathering of soil leads to increment in concentrations of Fe and Al oxides.

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10. Which of the following will increase the population of a community in a region?

1. 1. Dispersal
2. 2. Natality
3. 3. Mortality
4. 4. Immigration

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11. Wetlands are vital for human survival. Which of the following anthropogenic factors are leading to its degradation?

1. 1. Due to siltation
2. 2. Encroachment by Real Estate Projects
3. 3. Dumping of waste
4. 4. Presence of invasive species
5. 5. Eutrophication

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12. Which of the following factors will enhance the productivity of an aquatic body ?

1. 1. Large extent of photic zone.
2. 2. High DO and BOD.
3. 3. High temperature change.
4. 4. Eutrophication.

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13. Which of the following statement correctly defines the term “Greenwashing”?

14. Which of the following statements is/are true about Biogeochemical Cycles?

1. 1 . These cycles represent the energy and materials in circulation in an ecosystem.
2. 2 . I n gas eous cycl e t he res ervoi r i s t he atmosphere and in sedimentary cycle the reservoir is the earth’s crust.
3. 3 . In Carbon cycle, the CO is released after the biodegradation of dead organic matter.

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15. Which of the following is/are the negative impacts of Green Revolution?

1. 1 . Inter crop disparity increased
2. 2 . Unemployment
3. 3 . Depletion in groundwater
4. 4 . Air and water pollution

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