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Earn 100
Which of the following event does NOT lead into secondary succession?
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Important Questions on Ecological Adaptations, Succession and Ecological Services
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Choose the right sequence of hydrarch succession from the following:
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In hydroseric succession, which stage comes just before sedge meadow stage?
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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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Secondary succession takes place on / in
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During ecological succession:
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Choose the incorrect statements.
(A) In mesophytes, unless the habitat is specialised no adaption is necessary.
(B) 'Warming' a British botanist classified plant communities as three ecological groups based on the dependence on water.
(C) Due to the flooding, in the destroyed lands the secondary succession occurs much faster.
(D) In hydrophytes, the multi-layered epidermis will be useful in absorbing only water from surroundings.
HARD
Assertion (): A primary succession is more common than secondary succession.
Reason (): Biogeochemical cycling is absent in secondary succession.
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Vertical distribution of different species occupying different levels in a biotic community is known as:
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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:
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A violent volcanic eruption wiped out most of the life forms in an island. Over different forms of simple organisms colonised this region, followed by the emergence of other organisms such as shrubs, woody plants, invertebrates and mammals. This ecological process is referred to as
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Give reasons for the following:
Climax stage is achieved quickly in secondary succession as compared to primary succession.
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The organisms which invade a bare area to initiate an ecological succession are known as
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What is pioneer species?
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Fill up the blanks with suitable words.
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
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Differentiate between primary succession and secondary succession.
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Study the following graph of the metabolic rate of various terrestrial mammals as a function of their body mass and choose the correct option below.
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The primary producers of the deep-sea hydrothermal vent ecosystem are
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Ecological succession is
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Choose the incorrect statements.
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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Secondary succession takes place on/in:
