Multiple Choice QuestionsWhich one of the following is a characteristic feature of cropland ecosystem?
Least genetic diversity
The absence of weeds
Ecological succession
Ecological succession
Which is the National Aquatic Animal of India?
River dolphin
Blue whale
Sea-horse
Sea-horse
Which of the following is the most important cause of animals and plants being driven to extinction?
Alien species invasion
Habitat loss and fragmentation
Co-extinctions
Co-extinctions
Which one of the following is not used for ex-situ plant conservation?
Field genebanks
Seed banks
Shifting cultivation
Shifting cultivation
C.
Shifting cultivation
Shifting cultivation results into deforestation. Botanical gardens have a collection of living plants for reference. Seed banks store seeds as a source for planting in case, seed reserves elsewhere are destroyed. Field genebanks are a type of biorepository, which preserve genetic material.
Which of the following represent a maximum number of species among global biodiversity?
Algae
Lichens
Fungi
Fungi
The species confined lo a particular Region and not found elsewhere is termed as
Keystone
Alien
Endemic
Endemic
An example of ex-situ conservation is
National Park
Seed bank
wildlife Sanctuary
wildlife Sanctuary
A location with luxuriant growth of lichens on the trees indicates that the
trees are very healthy
trees are heavily infested
the location is highly polluted
the location is highly polluted
Match the following and select the correct option.
|
Column I
|
Column II |
||
|
a |
Earthworm |
1. |
Pioneer species |
|
b. |
Succession |
2. |
Detritivore |
|
c. |
Ecosystem service |
3. |
Natality |
|
d. |
Population growth |
4. |
Pollination |
|
A |
B |
C |
D |
|
1 |
2 |
3 |
4 |
|
A |
B |
C |
D |
|
4 |
1 |
3 | 2 |
|
A |
B |
C |
D |
|
3 |
2 | 4 | 1 |
|
A |
B |
C |
D |
|
3 |
2 | 4 | 1 |
A species facing extremely high risk of extinction in the immediate future is called
Vulnerable
endemic
critically endangered
critically endangered
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