Question

(b) Shelford’s law of tolerance suggests that

organisms with a wide tolerance limit

for environmental factors show :

(i) Narrow distribution with low

population

(ii) Wide distribution with high

population

(iii) Narrow distribution with high

population

(iv) Wide distribution with low

population.

(c) The ability of a population to increase

under ideal environmental conditions

is :

(i) Carrying capacity

(ii) Absolute natality

(iii) Biotic potential

(iv) Natality.

(d) Soil changes due to erosion is an

example of :

(i) Allogenic succession

(ii) Autogenic succession

(iii) Computational succession

(iv) Emigrational succession.

(e) Which of the following is mainly

responsible for wildlife extinction ?

(i) Pollution

(ii) Hunting

(iii) Habitat destruction

(iv) All of the above.​

Answer 1

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Answer 2

(b) Concept: Shelford's law of tolerance suggests that organisms with a wide tolerance limit for environmental factors show distinct graphs.
Answer: The answer is option (i)
Explanation:
•Organisms with a wide range of tolerance are distributed widely, while those with a narrow range have a more restricted distribution.
Hence, the correct answer of the question is option (i)

(c)Concept: The ability of a population to increase under ideal environmental conditions depends on certain factors.
Answer: The answer is option (iv)
Explanation:
•The two main factors affecting population growth are the birth rate and death rate.
Hence, the correct answer of the question is option (iv)

(d)Concept: Succession is a relatively predictable process of change that occurs in plants and soils.
Answer: The answer is option (i)
Explanation:
•Allogenic succession is caused by external environmental influences, such as soil changes due to erosion.
Hence, the correct answer of the question is option (i).

(e) Concept: Factors responsible for wildlife extinction.
Answer: The answer is option (iv)
Explanation: Numerous factors responsible for the extinction of wildlife are pollution, habitat loss, hunting, overexploitation etc.
Hence, the correct answer of the question is option (iv).