EVERYDAY SCIENCE

Detailed explanation-1: -Pollen is a powdery substance that is released from the male part of a flower in order to fertilize the female part.

Detailed explanation-2: -This pollen tube carries a male gamete to meet a female gamete in an ovule. In a process called fertilisation, the two gametes join and their chromosomes combine, so that the fertilised cell contains a normal complement of chromosomes, with some from each parent flower.

Detailed explanation-3: -As a plant’s reproductive part, a flower contains a stamen (male flower part) or pistil (female flower part), or both, plus accessory parts such as sepals, petals, and nectar glands (Figure 19). The stamen is the male reproductive organ.

Detailed explanation-4: -Stamens: Male Reproductive Organs A stamen consists of an anther (which produces pollen, the male reproductive cell) and a filament.

Detailed explanation-5: -After fertilization takes place, the ovule develops into a seed that contains a tiny, undeveloped plant. The ovary surround-ing the ovule develops into a fruit. Figure 2 shows how the ovary and ovules of a flower develop into a fruit and seeds.