Homeostasis is 

1. tendency to change with change in environment

2. tendency to resist change

3 disturbance in regulatory control

4. plants and animals extracts used in homeopathy

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
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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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The most ecologically relevant environmental factor is:

1. Temperature

2. Water

3. Light

4. Soil

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
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If global warming continues, how would the distributional range of some species be affected?

1. There will be a poleward shift

2. There will be an equatorial shift

3. No change expected for any species

4. Shift to marine water from land

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
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Many freshwater animals cannot live for long in sea water and vice versa because of:

1. Buoyancy related problems

2. Lack of impermeable skins

3. Thermolabile enzymes

4. Osmotic considerations

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
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Under unfavorable conditions, many zooplankton species in lakes and ponds are known to enter a stage of suspended development called as:

1. Dormancy

2. Hibernation

3. Aestivation

4. Diapause

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
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The given age pyramid represents a:

1. Fast expanding population

2. Slowly expanding population

3. Stable population

4. Declining population

Subtopic:  Population Characters: Age Structure & Migration |
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Darwinian fitness is represented by:

1. Low r value

2. High r value

3. High K value

4. Low K value

Subtopic:  Life History Variations |
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Under a particular set of selection pressures, organisms evolve towards the most efficient:

1. Thermoregulation

2. Water conservation

3. Respiration

4. Reproduction strategy

Subtopic:  Life History Variations |
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A population interaction where one species is harmed whereas the other is unaffected is called as:

(1) Mutualism

(2) Competition

(3) Predation

(4) Amensalism

Subtopic:  Population Interactions: Amensalism |
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