B. Give reasons:-
1. Large number of sperms are present in the semen
2. Transpiration is helps in upward conduction of water in plants
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1. Sperms are produced in large numbers to ensure the fertilisation of the ovum. In the female reproductive tract as sperms swim up to meet the ovum, there are various obstructions that lead up to fertilisation: Some sperms die due to vaginal secretions, or due to their short life span.
2.Transpiration is the loss of water in the form of water vapour from the aerial parts of a plant. ... As water evaporates from the leaves, a suction force is created. This force helps to draw more water up through the stem which causes the roots to absorb more water from the soil.
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