61

The 2004 Tsunami made people realise that mangroves can serve as a reliable safety hedge against coastal calamities. How do mangroves function as safety hedge?

A

The mangrove swamps separate the human settlements from the sea by a wide zone in which people neither live nor venture out.

B

The mangrove provides both food and medicines which people are in need of after any natural disaster.

C

The mangrove trees are tall with dense canopies and serve as an excellent shelter during a cyclone or tsunami.

D

The mangrove trees do not get uprooted by storms and tides because of their extensive roots.

E

Answer

D

Instruction

62

The "Red Data Book" published by the International Union for Conservation of Nature and Natural Resources (IUCN) contain lists of

1. Endemic plant and animal species present in the biodiversity hotspots.

2. Threatened plant and animal species.

3. Protected sites for conservation of nature and natural resources in various countries.

Select the correct answer using the codes given below.

A

1 and 3

B

2 only

C

2 and 3

D

3 only

E

Answer

B

Instruction

63

La Nina is suspected to have caused recent floods in Australia. How is La Nina different from EI Nino?

1. La Nina is characterized by unusually cold ocean temperature in the equatorial Pacific Ocean.

2. El Nino has adverse effect on south-west monsoon of India, but La Nina has no effects on monsoon climate.

Which of the statements given above is/are correct?

A

1 Only

B

2 Only

C

Both 1 and 2

D

Neither 1 nor 2

E

Answer

D

Instruction

64

Consider the following statements.

1. Biodiversity is normally greater in the lower latitudes as compared to the higher altitudes.

2. Along the mountain gradients, biodiversity is normally greater in the lower altitude as compared to higher altitudes.

Which of the statements given above is/are correct?

A

1 Only

B

2 Only

C

Both 1 and 2

D

Neither 1 nor 2

E

Answer

C

Instruction

65

Microbial Fuel cells are considered a source of sustainable energy. Why?

1. They use living organisms as catalysts to generate electricity from certain substrates.

2. They use a variety of inorganic materials as substrates.

3. They can be installed in waste water treatment plants to cleanse water and produce electricity.

Which of the statements given above is/are correct?

A

1 Only

B

2 and 3

C

1 and 3 Only

D

1, 2 and 3

E

Answer

D

Instruction

66

With what purpose is the Government of India promoting the concept of "Mega Food Parks"?

1. To provide good infrastructure facilities for the food processing industries

2. To increase the processing of perishable items and reduce wastage

3. To provide emerging and ecofriendly food processing technologies

Select the correct answer using the codes given below.

A

1 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

E

Answer

D

Instruction

67

Biodiversity forms the basis for human existence in the following ways:

1. Soil formation

2. Prevention of soil erosion

3. Recycling of waste

4. Pollination of crops

Select the correct answer using the codes given below.

A

1, 2 and 3 only

B

2, 3 and 4 only

C

1 and 4 only

D

1, 2, 3 and 4

E

Answer

D

Instruction

68

Which one of the following is located in the Bastar region?

A

Bandhavgarh National Park

B

Dandeli Sanctuary

C

Rajaji National Park

D

Indravati National Park

E

Answer

D

Instruction

69

Consider the following

1. Rice Fields 2. Coal mining

3. Domestic animals 4. Wet lands

Which of the above are sources of methane, a major greenhouse gas?

A

1 and 4 only

B

2 and 3 only

C

1, 2 and 3 only

D

1, 2, 3 and 4

E

Answer

C

Instruction

70

In a food chain of cat, seed-eating birds, plants and dog, which one will have maximum pesticides?

A

Cat

B

Plants

C

Dog

D

Seed-eating birds

E

Answer

C

Instruction