Under normal circumstances which of the following affects population density most?

1. Nt

2. B

3. I

4. E

Subtopic:  Population: Exponential Growth Model | Population: Logistic Growth Model |
 67%
From NCERT
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The innate potential to grow in number does not follow which of the following statements?

(1) Each species has this ability

(2) When resources are unlimited only then it is realized

(3) This is an ideal situation.

(4) Resource availability is not that essential for the unimpeded growth

Subtopic:  Population: Exponential Growth Model |
 64%
From NCERT
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The equation of the exponential growth curve of the population has 'r’ that means which of the following statements?

1. Extrinsic rate of natural increase

2. An important parameter for assessing impacts of only biotic factors on population growth

3. For Norway rat, it values is 0.15

4. For flour beetle, it is 0.12

Subtopic:  Population: Exponential Growth Model |
From NCERT
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What does K mean?

1. Nature's Carrying Capacity

2. Number of individuals of a species supported by nature as per the resources available

3. A maximum possible number of individuals of a species under practical circumstances.

4. All of these

Subtopic:  Population: Logistic Growth Model |
 84%
From NCERT
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In the V-PL growth curve, the asymptote is reached when

1. It's a lag phase

2. Just before the lag phase

3. At the time of curve reaching K

4. The time before deacceleration.

Subtopic:  Population Dynamic |
 86%
From NCERT
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Evolution of population

(1) Maximizing Reproductive fitness

(2) Low r value

(3) Minimizing Darwinian fitness

(4) Both B and C

Subtopic:  Life History Variations |
 77%
From NCERT
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Which of the following will breed more than once in their life cycle?

1. Pacific salmon fish

2. Bamboo

3. Cuckoo

4. Both 1 and 3

Subtopic:  Population Interactions: Parasitism |
 64%
From NCERT
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The biological community can have

1. An isolated population of plants which doesn't depend on animals and microbes

2. An isolated population of animals which doesn't depend on plants and microbes

3. An isolated population of microbes which doesn't depend on plants and animals

4. No isolated population is possible there.

Subtopic:  Population Characters: Density |
 79%
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By a particular interaction in a population, one species was benefited while others was not affected at all. Such interaction is called as

1. Commensalism

2. Mutualism

3. Vandalism

4. Competition

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 94%
From NCERT
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By a particular interaction in a population, one species was harmed while other was benefited. Such interaction is called as

1. Competition

2. Predation

3. Parasitism

4. Both 2 and 3

Subtopic:  Population Interactions: Predation | Population Interactions: Parasitism |
 88%
From NCERT
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