51

Which one of the following is not a site for in-situ methods of conservation of flora?

A

Biosphere Reserve

B

Botanical Garden

C

National Park

D

Wildlife Sanctuary

E

Answer

B

Instruction

52

Three of the following criteria have contributed to the recognition of Western Ghats-Sri Lanka and Indo-Burma regions as hotspots of biodiversity

1. Species richness

2. Vegetation destiny

3. Endemism

4. Ethno-botanical importance

5. Threat perception

6. Adaptation of flora and fauna to warm and humid conditions

Which three of the above are correct criteria in this context?

A

1, 2 and 6

B

2, 4 and 6

C

1, 3 and 5

D

3, 4 and 6

E

Answer

C

Instruction

53

The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?

A

It has a high rainfall that supports luxuriant vegetative growth.

B

It is a confluence of different biogeographical zones.

C

Exotic and invasive species have not been introduced in this region.

D

It has less human interference.

E

Answer

B

Instruction

54

Consider the following pairs:

1. Desertification-converting the large tract of desert to natural grassland like State

2. deforestation soil loss, watershed damage, altered rainfall patterns follow

3. Green revolution-attempt to improve crop production on existing land

4. Solar-hydrogen power is not the best option

5. CFCs invisible, odorless compounds that contribute to ozone thinning

Which of the above given statements are correct?

A

2, 3 and 5 Only

B

2 and 4 Only

C

All of the above

D

None of the above

E

Answer

A

Instruction

55

The characteristic feature/s of the ecosystems is/are

1. Energy inputs and outputs

2. One trophic level

3. Nutrient cycling but not outputs

Select the correct answer using the codes given below.

A

1 only

B

1 and 2 Only

C

1, 2 and 3 Only

D

3 Only

E

Answer

A

Instruction

56

Trophic levels are

Structure feeding relationships

Who eats whom in an ecosystems

A hierarchy of energy transfer

Select the correct answer using the codes given below.

A

1 and 2 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3 only

E

Answer

D

Instruction

57

Consider the ecosystems terms with the suitable description.

Producers----photoautotrophs

Consumers---feed on partly decomposed matter

Decomposers---decade organic remains, wastes

Detritivores--- herbivores, carnivores, omnivores

Select the correct answer using the codes given below.

A

1 and 2 Only

B

1 and 3 Only

C

1 only

D

1, 2, 3 and 4

E

Answer

B

Instruction

58

A habitat

1. Has distinguished physical and chemical features.

2. Is where individuals of a species normally live.

3. Is occupied by various species.

Select the correct answer using the codes given below.

A

1 and 2 Only

B

1 and 3 Only

C

2 and 3 only

D

1, 2 and 3

E

Answer

D

Instruction

59

A two-way flow of benefits in mutualistic interactions between species is an outcome of

A

Close cooperativeness

B

Resource partitioning

C

Two-way exploitation

D

Competitive coexistence.

E

Answer

B

Instruction

60

Two species in the same habitat can coexist when they

1. Differ in their use of resources.

2. Share the same resource in different ways.

3. Use the same resource at different times.

Select the correct answer using the codes. given below,

A

1 and 3 only

B

2 only

C

3 only

D

1, 2 and 3

E

Answer

D

Instruction