Q. No.Match each item in Column I with one in column II and select the correct answer from the codes given:
COLUMN I
COLUMN II
A
Dodo
P
Bird
B
Thylacine
Q
Zebra
C
Quagga
R
Marsupial
D
Steller’s sea cow
S
Aquatic mammal
Codes:
A
B
C
D
1.
P
Q
R
S
2.
P
Q
S
R
3.
P
R
Q
S
4.
S
R
Q
P
COLUMN I
COLUMN II
A
Dodo
P
Bird
B
Thylacine
Q
Zebra
C
Quagga
R
Marsupial
D
Steller’s sea cow
S
Aquatic mammal
A
B
C
D
1.
P
Q
R
S
2.
P
Q
S
R
3.
P
R
Q
S
4.
S
R
Q
P
Given below are the characteristics used in explaining higher biodiversity in tropics. Identify the one/s that is/are correctly matched:
|
I. |
More speciation |
Less seasonal, constant environment |
|
II. |
Niche specialization |
Latitudes undisturbed for millions of years |
|
III. |
Higher productivity |
More solar energy is available |
| 1. | Only III | 2. | Only I and III |
| 3. | II only | 4. | None are correctly matched |
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Biodiversity hotspots are characterized by:
1. High number of endemic species and low threat of extinction
2. Low number of endemic species and low threat of extinction
3. Low number of endemic species and high threat of extinction
4. High number of endemic species and high threat of extinction
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What is common to Lates niloticus, Lantana Camara, and Parthenium hysterophorus?
1. They all have caused the extinction of a large number of indigenous species in India.
2. They have been extinct in the wild in the past 200 years.
3. Transgenic varieties of these organisms are used to harvest therapeutic products.
4. They are all examples of alien species that have become invasive in some environments where they were introduced.
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David Tilman conducted long-term ecosystem experiments using outdoor plots. His findings include:
| I: | Plots with more species showed less year-to-year variation in total biomass. |
| II: | Increased biodiversity contributed to higher productivity. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
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Ramsar Convention provides the framework for national action and international cooperation for the conservation of:
| 1. | Alpine forests | 2. | Wetlands |
| 3. | Deserts | 4. | Polar regions |
Which of the following recently extinct animals was one of the largest carnivorous marsupials?
| 1. | Quagga | 2. | Thylacine |
| 3. | Steller’s sea cow | 4. | Dodo |
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Extinction of species has been always there on the earth but the current extinction is of more concern because:
| 1. | more animals are getting extinct |
| 2. | it is caused by alien species introductions |
| 3. | rate of extinction is much higher than previous extinctions |
| 4. | it is primarily affecting the plant diversity |
| Assertion (A): | Ex-situ conservation is advisable if the organism is facing a high threat of extinction. |
| Reason (R): | Ex-situ conservation is an on-site conservation where we conserve and protect the whole ecosystem. |
| 1. | Both (A) and (R) are True and the (R) is the correct explanation of the (A) |
| 2. | Both (A) and (R) are True but the (R) is not the correct explanation of the (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
| 1. | Amazon rain forest produces 20% of total oxygen in the Earth’s atmosphere |
| 2. | All the biodiversity hotspots put together cover about 10 % of the Earth’s land area |
| 3. | About 31 % of all gymnosperms species in the world face the threat of extinction |
| 4. | India’s share of the global species diversity is about 8.1 % |
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