According to Chittay (1960), most of the animal populations have self-regulation mechanism to check their population controlled by some intrinsic factors, such characteristic examples are shown by
A
Lemmings (rodents) after every 4 years by mass suicides
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B
Anadromous migration of eels and salmons
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C
Both A and B
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D
None of the above
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Solution
The correct option is C Both A and B
Intrinsic factors for population control are self-regulatory mechanisms that involve the population's ability to respond to its own density and make necessary adjustments. These include intraspecific competition, territoriality , metabolic demand and migratory behaviour. Thus, the correct answer is option C.