Question

Match column I with column II and identify the correct option.

Column I	Column II
A. Breed only once in their lifetime	1. Rat
B. Breed many times in their lifetime	2. Pacific salmon fish
C. More number of small sized offsprings	3. Elephant
D. Less number of large sized offsprings	4. Oysters

Answer 1

There are various reproductive strategies that organisms adapt based on the abiotic (availability of nutrients, temperature, etc) and biotic components (competition within the same species, predation, etc) of the habitat in which they live.

Some organisms such as the Pacific salmon fish and bamboo breed only once in their lifetime while others like rats breed many times during their lifetime.
Another strategy that organisms adapt is to produce large numbers of small sized offspring. E.g: Oysters, pelagic fishes, etc.
Some other organisms produce small numbers of large sized offsprings. E.g: Humans, kangaroos, elephants, etc.