Plants that spread seeds to animals include Xanthium sibiricum, Tribulus terrestris, Bidens bipinnata, Vitis amurensis, pine trees, cherries, pine nuts and chestnuts.
Seeds such as Bidens bipinnata and Xanthium sibiricum have bristles and inverted claws outside, which will attach to animal fur when touched lightly.
Most plants, such as cherries and wild grapes, have fleshy fruits. After the fruits of these plants are preyed by birds, the seeds are freely excreted everywhere through the digestive tract.
Chestnuts and pine nuts are moved to squirrel's house for storage, some of which can be eaten, and the rest will take root and sprout next year.
Wind expansion
Plants that spread seeds by wind include dandelion, willow, poplar and maple. The seeds of these plants are usually light and can float in the air, and the light wind can transport them to the seaside.
The seeds of some plants will also produce special structures suitable for wind flight, such as fine hairs on cotton or willow seeds, umbrella-shaped crown hairs on dandelion fruits, and wing-like structures of pine, oak and elm seeds.
Water transport
Plants that grow in water and near the water often spread their seeds by water power, such as coconut trees and water lilies. When the coconut is ripe, its shell becomes hard, just like a boat drifting away with the sea. A new coconut tree will grow after being washed ashore by the waves.
After the fruit of water lily ripens, it falls into the water and slowly decays. Seeds wrapped in spongy exocarp float, float to the water surface, and finally sink to the bottom to take root and sprout.
Launch propagation
Launch refers to the launch of seeds like shells, such as rape, mustard, peas, soybeans, mung beans, sorrel, impatiens and so on. The seeds of these plants are mature, dry and hard, and their skins often break in the hot sun. Dad? . One of the most interesting is called. Blow melons? Some plants, when the melon is ripe, drop it when touched, and spray seeds from it instantly.
self propagation
Crops grow in various forms, and some crops spread by themselves. We know that some fruits and seeds have their own weight, and when they are ripe, they will fall directly to the ground due to gravity, such as persimmon with hairy leaves and eggplant with big leaves. Some fruits will pop up by themselves, such as capsules and pods.