NEET BIOLOGY

Detailed explanation-1: -The pollen tube contains the male gamete which follows the style to reach the ovary in which there are ovules and contain the egg cell. The pollen tube penetrates into the ovule and releases the male gametes into the embryo sac where the egg and polar nuclei are present and thereafter fusion takes place.

Detailed explanation-2: -Male gametes are found inside tiny pollen grains on the anthers of flowers. Female gametes are found in the ovules of a flower.

Detailed explanation-3: -Within the flower, sperm cells are produced by pollen at the tips of stamens, while egg cells develop in ovules, tiny structures embedded in the ovary at the base of the pistil.

Detailed explanation-4: -In flowering plants, male and female gametes are produced in the anther and ovule, respectively. Male gametes are contained within pollen grains, which are released from the anthers at anthesis.

Detailed explanation-5: -Final answer: The wrong statement regarding pollen grains is when pollen is shed at the two-celled stage, double fertilization does not take place.