how do plants disperse their seeds? discuss many ways please?

Question

discuss many ways please

Answer 1

I'm a sucker for homework questions!!!
Common methods for seed dispersal include, wind (light or feathery seeds) water (seeds that float like coconuts) and animals (either caught on there hair or eaten and defecated ).

Answer 2

To answer your homework question properly, the following should suffice. Mechanical movement by means other than wind water or gravity; Wind dispersal, seed with pappus, etc., Water, IE Water Lilies. Gravity is simply the pull placed upon seed by gravity. (Seed "rolling" down a hillside.)

Mechanical methods are the most diverse and interesting. There is a tree that is indigenous to Dominica in the family Crassuliaceae. The fruit attracts ants that eat the fruit. The ants are anaesthetized by the secondary phenolics, chemicals, in the fruit. The seed is sticky and lies on the ground with the "sleeping ants. Birds are attacted to the "sleeping" ants which are eaten. The sticky seed sticks to the birds feet and carried, moved, to another location were the bird "removes" or they fall off of the bird’s feet.

Answer 3

here are five mains ways that plants disperse their seeds:

WIND DISPERSAL:
The Bird Cage plant lives in California and it is a sphere shape that rolls along the ground. As it rolls, the seeds are released.

Fungi are not really plants but they still have seeds. The Fungi seeds are microscopic and are called spores. Fungi disposes of its seeds in a dust cloud. When water falls on the puff balls, the spores erupt in a puff of smoke.

When Dandelions die, they turn into a small, white fluffy globe and within the globe are around 200 seeds, each with their own miniature parachute. When the wind comes, the seeds are carried for miles.

The Cottonwood tree disposes of its seed by producing fluff which the wind carries. Within the fluff are hundreds of seeds which are practically weightless.

SPECIAL STRUCTURES:
The Borneo Plant disperses its seeds by a miniature glider which the seeds are attached to and seeing the seeds are as light as a feather, the glider and seed can be carried for miles.

Sycamore seeds are diposed of by a sort of miniature helicopter. The helicopter is actually a small leaf in which the seed is carried safely to the ground.

The Squirting Cucumber disperses its seeds by squirting them out when they come in contact with water like rain.

The Himalayan Balsam flings its seeds with a great force so that they will travel far away from the original plant so that they are not seen growing close together.

WATER DISPERSAL:
The Sea Bean has the largest seed pod in the world. It can travel more than 3 kilomters through rivers before it flows into the sea and here it can float around for up to a year before it is washed ashore. Coconuts are also dispersed in this manner.

LIVING CREATURES:
Animals have hairy coats. When dogs run around, they get seeds that stick in their fur which it shakes or washes off in other places.

Humans step on prickles with seeds in them which are moved away as the humans move. Seeds like Cobblers Pegs stick on clothing and are brushed off in other places.

Ants find seeds still in the pod and take them to their nest. It is then given to the larvae which eat the pod and leave the seed in their underground nest. The seed is left there for a while and during that time they start to grow.

Birds usually eat the blackberries and drop the seeds or like the Cassowary, step on seeds that stick to their feet until they lose their grip and fall off.

The African Elephant eats the Acacia plant and helps to disperse the seeds by shaking the trees. When the elephant eats the seeds, they find a fertile home in the elephant's droppings.

The Agouti is the only animal that can crack the outer casing of the Brazil Nut and it helps to disperse and germinate the seeds by cracking the shell.

The Alpine Nut Cracker eats pine cone seeds and it usually buries what it doesn't eat. When it forgets where it has buried them the seeds then have a chance to grow.

OTHER ADAPTATIONS:
Blackberries change from green to black and this colour change attracts birds and animals which eat the flesh and drop the seeds.

The Cassowary eats many differnet types of fruits from which it eats the flesh and then it spits the seeds out.

The Durian is a plant that is really smelly and animals of all sorts like the Orangutan come to eat it. As it is broken open all the seeds just tumble out.

The Proteas depend on fires to burn the seed pod and release its seeds. The seeds are stored on stalks inside the pod.

Answer 4

1.) wind may blow the seeds into fertile ground
2.)insects
3.)humans may plant some
4.)trees drop fruit
5.)sometimes water may carry the seeds to fertile ground

Answer 5

By wind,
by attaching to passing animals
by being eaten by and "deposited" by animals