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Earn 100
How many transitional communities are present in the hydrarch succession (hydrosere)?
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Important Questions on Ecosystem
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Assertion (): A primary succession is more common than secondary succession.
Reason (): Biogeochemical cycling is absent in secondary succession.
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Ecosystem services are ____ understood. The value of ecosystem is larger than ____. Many of these services are ____ services and cannot be ____ by anyone. The ecosystem value is nearly ____ the globes GNP. The ecosystem services are delivered by ____.
A. Living stuff.
B. Poorly
C. Twice
D. Non-market
E. Global economy.
F. Owned
MEDIUM
Match the following?
| Column I | Column II | ||
| (a) | Predictable change in species composition | (i) | Equilibrium |
| (b) | Climax community | (ii) | Seral stages |
| (c) | Entire sequence community | (iii) | Ecological succession |
| (d) | Transitional community | (iv) | Sere |
| (v) | Succession | ||
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A) Pollinators play significant role in the production of food crops.
B) One of the threats to pollinators is habitat destruction by land use.
C) The climax community remain stable as long as environment is changing with adoptions.
D) Secondary succession will be a slow process compared to the primary succession.
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Match the following lists:
| List- | List- | ||
| (A) | Rooted hydrophyte with floating leaves | (I) | Limnophila |
| (B) | Submerged suspended hydrophyte | (II) | Vallisneria |
| (C) | Free floating hydrophyte | (III) | Utricularia |
| (D) | Amphibious plant | (IV) | Victoria regia |
| (V) | Salvinia |
The correct match is:
MEDIUM
Give reasons for the following:
Climax stage is achieved quickly in secondary succession as compared to primary succession.
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