Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Organisms and Populations

Question:

The organism that breeds only once in their life time :

Options:

Oysters

Banyan tree

Prawn

Pacific salmon fish

Correct Answer:

Pacific salmon fish

Explanation:

The correct answer is Option (4) -Pacific salmon fish

Under a particular set of selection pressures, organisms evolve towards the most efficient reproductive strategy. 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).

Prawn: A mature female prawn is significantly larger than a mature male prawn. It is simple to determine if a prawn is male or female.The male's shell must be hard and the female's shell must be soft in order for a pair of prawns to spawn. The eggs of a prawn are fertilised while they are still inside a female body. Female prawns can become pregnant many times during the mating season.

Banyan tree: Banyan trees are perennial plants, and they do not have a fixed reproductive pattern like the Pacific salmon. They can produce seeds multiple times during their long lifespan, which can extend for hundreds of years.