Consider the following statements about ecological succession

1. It occurs parallel to the changes in physical environment.
2. Deforestation can disrupt the process of succession.
3. Hydrarch succession takes place in wet areas while mesic succession takes place in dry areas.

Select the correct choice

1 and 2 only

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1 and 3 only

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2 and 3 only

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1,2 and 3

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Solution

The correct option is A 1 and 2 only
Ecological Succession: It is the gradual and fairly predictable change in the species composition of a given area. The change is orderly and sequential, parallel with the changes in the physical environment. Succession of plants can be hydrach or xerarch.Hydrarch succession takes place in wetter areas and the progress is from hydric to the mesic conditions. Xerarch succession takes place in dry areas and the progress is from xeric to mesic conditions. A natural or human induced disturbance (fire, deforestation, etc.), can convert a particular seral stage of succession to an earlier stage.

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किसी दिए गए क्षेत्र की प्रजातियों की संरचना में क्रमिक और उचित आंकलित परिवर्तन को क्रमक(sere) कहा जाता है।
समुदायों का संपूर्ण अनुक्रम जो किसी दिए गए क्षेत्र में क्रमिक रूप से परिवर्तित होता है, को पारिस्थितिक अनुक्रमण कहा जाता है।
जलारंभी अनुक्रमण जलमग्न क्षेत्रों में होता है और अनुक्रमण श्रेणी हाइड्रिक से समोदित(mesic) परिस्थिति की ओर अग्रसित होती है।

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