Plant seeds
A seed is the embryo of a future plant. The fruit protects the seed: an apple has several seeds, a plum has one. A seed needs water, warmth and air to sprout. Experiment: when seeds are put in water, those that sink are good, while floaters often will not sprout; on a damp napkin in a warm place the seed sprouts and sends out a root. For a new plant to find room, its seed must land far from the parent. Wind carries dandelion and maple seeds; water carries a coconut to the shore; burdock fruits cling to animal fur; a squirrel hides acorns and juniper seeds and forgets some; and the pod of a yellow acacia bursts open and scatters its seeds itself.
Sprout seeds: spread a damp napkin in a plastic container, put bean or pea seeds on it, cover with another damp napkin, keep it warm and moisten daily. Record in a diary: on which day did a root appear?