Question

please give me answer very fast​

Answer 1

______ANSWER 01_______

Following are the various methods of seed dispersal:

Dispersal by Wind:

Seeds of some plants are light-weight and some hair-like or wing-like structures are present on them. Such seeds float on air and are thus dispersed by wind. Example: Dandelion, maple, drumstick, etc.

Dispersal by Water:

Dispersal by water takes place in some aquatic plants and in some which grow near a water body. Seeds of water lily float and thus dispersed by water. The coconut seed has a tough fibrous covering which has plenty of air inside. This helps the coconut seeds in floating on water.

Dispersal by Animals:

Some seeds have spine-like structures on them. They get stuck to the fur of animals and thus get spread to different places. Examples; Beggar tick, Xanthium, etc. Some seeds are swallowed by birds and animals along with fruits. These seeds get dispersed with bird or animal droppings.

Dispersal by Bursting:

Some fruits burst open when they mature. The force of bursting is enough to spread the seeds. Examples; Ladyfinger, castor, balsam, etc.

Dispersal by Humans:

Human beings also help in dispersal of seeds, especially during farming.

______ANSWER 02______

Platelets are responsible for clotting of blood. If there are no platelets, the blood would not clot in case of an injury.This will lead to excess blood loss and can even lead to the death of a person.

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