Q.
Which of the following organisms breed only once in a lifetime?a. Bamboob. Pacific salmon fishc. Oystersd. Mammals
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a
a and b
b
c and d
c
b and c
d
a and d
answer is A.
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Detailed Solution
Some organisms breed only once in their lifetime (Pacific salmon fish, bamboo) while others breed many times during their lifetime (most birds and mammals). Some produce a large number of small-sized offspring (Oysters, pelagic fishes) while others produce a small number of large-sized offspring (birds, mammals).
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