ECOLOGY
ECOLOGICAL SUCCESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Species do not interact with each other in the course of succession.
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During succession, new species move into an area and colonize it, and are later replaced by newer species.
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Most ecological successions occur over 10 to 15 years.
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Detailed explanation-1: -Nothing remains the same and habitats are constantly changing. In the ecological succession the biomass overall decreases. There are two main types of succession, primary and secondary. So the correct option is ‘Species diversity, biomass increases’.
Detailed explanation-2: -During succession, some species become more in number as they colonise the area. Some other species may become less in number and even disappear. Hence, option d is incorrect.
Detailed explanation-3: -Ecological succession is the gradual and fairly predictable change in the species composition of a given area. During succession, some species colonies area and their population become more numerous, whereas, the population of other species declines and even disappears.
Detailed explanation-4: -Ecological succession is a steady, gradual change in the composition and structure of communities of an area with the changing environment. It is predictable, sequential and occurs in accordance with the changing physical environment.