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11.Organisms and Populations
medium
Which of the following is correct for $r$-selected species?
A
Large number of progeny with small size
B
Large number of progeny with large size
C
Small number of progeny with small size
D
Small number of progeny with large size
(NEET-2016)
Solution
(a) : Organisms that are $r$ selected ($r$ - strategists) able to colonise a habitat rapidly, utilising the food and other resources before other organisms are established and begin to compete. The rstrategists tend to be relatively small organisms with short life spans ($e.g.$, bacteria) and often live in temporary or unstable environments; characteristically their survival depends on their ability to produce large numbers of offspring rather than on their ability to compete.
Standard 12
Biology
