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Question

The gradual and fairly predictable change in species composition of a given area is
  1. Ecological succession
  2. Pioneer species
  3. Stratification
  4. Climax community

A
Ecological succession
B
Climax community
C
Pioneer species
D
Stratification
Solution
Verified by Toppr


The gradual and fairly predictable changes in species composition of a given area is called ecological succession. The sere refers to the different stages that form and eliminate in the process of the ecological succession until the climax community colonozes the area.
Hence, the correct answer is 'Ecological Succession'

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Similar Questions
Q1
The gradual and fairly predictable change in species composition of a given area is
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Q2
Q. Regarding ecological succession, consider the following statements:Which of the statements given above is/are correct?

Q. पारिस्थितिक अनुक्रमण के संबंध में, निम्नलिखित कथनों पर विचार कीजिए:
  1. किसी दिए गए क्षेत्र की प्रजातियों की संरचना में क्रमिक और उचित आंकलित परिवर्तन को क्रमक(sere) कहा जाता है।
  2. समुदायों का संपूर्ण अनुक्रम जो किसी दिए गए क्षेत्र में क्रमिक रूप से परिवर्तित होता है, को पारिस्थितिक अनुक्रमण कहा जाता है।
  3. जलारंभी अनुक्रमण जलमग्न क्षेत्रों में होता है और अनुक्रमण श्रेणी हाइड्रिक से समोदित(mesic) परिस्थिति की ओर अग्रसित होती है।
उपर्युक्त कथनों में से कौन सा/से सही है/हैं?

  1. 1 and 2 only
    केवल 1 और 2

  2. 3 only
    केवल 3

  3. 2 and 3 only
    केवल 2 और 3

  4. 1, 2 and 3
    1, 2 और 3
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Q3
Identify the incorrect statement.
I. During plant succession, some species colonise an area and populations become more numerous.
II. Secondary succession is a slow process when compared to primary succession.
III. In the successive seral stages, there is no change in the species composition of the ecosystem.
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Q4
__ causes gradual change in a species and leads to its evolution.
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Q5
Assertion :Secondary succession always involves a predictable sequence of species and ends up with the same climax community as existed prior to the disturbance. Reason: A pond cannot be considered as a self-sustained ecosystem as it does not possess all the structural and functional components which work as a unit in an ecosystem.
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