EVERYDAY SCIENCE

Detailed explanation-1: -Male cones make pollen, which is carried to female cones by the wind. After the female gametes are fertilised by male gametes from the pollen, the female cones produce seeds. These are then scattered away from the plant by wind or animals.

Detailed explanation-2: -Seeds are found inside the cone on the upper surfaces of the cone scales. Open cones have dropped their seed; so collect closed cones only, preferably by picking them from trees.

Detailed explanation-3: -Most cone-bearing plants are evergreen with needle-like leaves. Conifers never have flowers but produce seeds in cones. Examples include pine, spruce, juniper, redwood, and cedar trees.

Detailed explanation-4: -Gymnosperms are one of the ancient plant groups with seed production. They are a group of vascular plants with naked (without ovary) seeds. Gymnospems are also heterosporous. Furthermore, gymnosperms produce two different types of cones, namely, large female cones and small male cones.

Detailed explanation-5: -Cone-bearing plants have two types of cones: female cones and male cones. Reproduction begins when one of the pollen grains from inside a pollen sac on the male cone floats through the air to the scale of a female cone. A pollen tube then grows from the pollen grain toward the female ovule.