EVERYDAY SCIENCE

Detailed explanation-1: -Higher plants such as trees reproduce by seeds while lower plants such as mosses and ferns reproduce by spores.

Detailed explanation-2: -Pollen is carried from a male part to a female part by wind, insects or other animals (a process called pollination), where it releases male gametes that fertilise the female gametes in the ovules. The ovules develop into seeds from which new plants will grow.

Detailed explanation-3: -Flower is the reproductive part of a plant. A flower may be unisexual with either the male or the female reproductive parts. A bisexual flower has both the male and the female reproductive parts. The male gametes are found inside the pollen grains and female gametes are found in the ovule.

Detailed explanation-4: -Plants such as ferns and mosses are called nonflowering plants and produce spores instead of seeds. There is also another group called the Fungi, that include mushrooms, and these also reproduce by spores.

Detailed explanation-5: -Not all plants produce seeds, but those that do often rely on these seeds to replicate themselves over successive seasons and years. Seeds are of immense biological and economic importance. They contain high protein, starch and oil reserves that help in the early stages of growth and development in a plant.