Ecology explains us:-

1. How organisms, while remaining as an individual interact with other organisms

2. How organisms, interact with physical habitats as a group

3. As a group how organisms behave like organised wholes that is population community, ecosystem or even as the whole biosphere

4. All of these

Subtopic:  Introduction to Ecology |
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Birth rate = B

Death Rate = D

Emigration = E

Immigration = I

     Column-I

   Column-II

A. Population is stable

I.   B + I > D + E

B. Population is increasing

II.  B + I = D + E

C. Population is decreasing

III. B + I < D + E

IV. B + E > D + I

(1) A - II, B - I, C – III

(2) A - II, B - IV, C - III

(3) A - III, B - IV, C – I

(4) A - I, B - II, C - IV

Subtopic:  Population Characters: Density |
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ln the given figure, identify Coniferous forest, Arctic and Alpine Tundra and tropical forest, respectively:-

1. l, Vl and lll

2. V, Vl and lll

3. lV, lll and l

4. l, ll and lll

Subtopic:  Introduction to Ecology |
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A wide variety of habitats within a biome can be a result of

1. Regional variation of temperature and precipitation.

2. Local variation of temperature and precipitation

3. Both 1 and 2

4. Natural selection

Subtopic:  Introduction to Ecology |
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Niche is

1. All the biological factors in the organism environment
2. The physical space where an organism live
3. The range of temperature that the organism needs to live
4. The functional role played by the organism where it lives

Subtopic:  Introduction to Ecology |
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Find the odd one out about levels of biological
organization:-
1. Biome 

2. Community

3. Species 

4. Population

Subtopic:  Introduction to Ecology |
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Physiological ecology

1. works at the organismic level

2. Tries to understand the adaptation with respect to survival only

3. Tries to understand the adaptation with respect to reproduction only

4. None of these

Subtopic:  Introduction to Ecology |
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Identify the biome that is not correctly matched with the physical parameters given in corresponding Column II and Column III:

   Biome  Mean annual temperature °C Mean annual precipitation [cm]
  1.  Tropical forest  20-25  130 - 430
  2.  Arctic and alpine tundra  -12 - 2  10 -125
  3.  Coniferous forest  -5 - 5  100 -200
  4.  Temperate forest  8-22  50 - 225

 

Subtopic:  Introduction to Ecology |
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A. Life exists in compost pits, permafrost polar regions.

B. Our intestine host only 3-10 microbes.

C. Major biomes of India include desert rainforest and tundra.

D. The important physicochemical components alone characterise different habitats.

How many of the above statements is/are wrong?

1. Three

2. Two

3. Only one

4. All four

Subtopic:  Introduction to Ecology |
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An association of individuals of different species living in the same habitat and having

functional interactions is.

1. ecological niche

2. biotic community

3. ecosystem

4. population

Subtopic:  Introduction to Ecology |
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