methods of dispersal of seed
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Autochory
Autochorous plants disperse their seed without any help from an external vector, as a result this limits plants considerably as to the distance they can disperse their seed.
Gravity
Barochoryor the plant use of gravity for dispersal is a simple means of achieving seed dispersal.
Ballistic dispersal
Ballochoryis a type of dispersal where the seed is forcefully ejected by explosive dehiscence of the fruit.
Allochory
Allochory refers to any of many types of seed dispersal where a vector or secondary agent is used to disperse seeds.
Wind
Wind dispersal (anemochory) is one of the more primitive means of dispersal
Water
Many aquatic (water dwelling) and some terrestrial(land dwelling) species use hydrochory, or seed dispersal through water.
By Animals
Animals can disperse plant seeds in several ways, all named zoochory.
By human
Dispersal by humans (anthropochory) used to be seen as a form of dispersal by animals
Recent research points out that human dispersers differ from animal dispersers by a much higher mobility based on the technical means of human transport.
(Source:Wikipedia)
Autochorous plants disperse their seed without any help from an external vector, as a result this limits plants considerably as to the distance they can disperse their seed.
Gravity
Barochoryor the plant use of gravity for dispersal is a simple means of achieving seed dispersal.
Ballistic dispersal
Ballochoryis a type of dispersal where the seed is forcefully ejected by explosive dehiscence of the fruit.
Allochory
Allochory refers to any of many types of seed dispersal where a vector or secondary agent is used to disperse seeds.
Wind
Wind dispersal (anemochory) is one of the more primitive means of dispersal
Water
Many aquatic (water dwelling) and some terrestrial(land dwelling) species use hydrochory, or seed dispersal through water.
By Animals
Animals can disperse plant seeds in several ways, all named zoochory.
By human
Dispersal by humans (anthropochory) used to be seen as a form of dispersal by animals
Recent research points out that human dispersers differ from animal dispersers by a much higher mobility based on the technical means of human transport.
(Source:Wikipedia)
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Answer:
The main oness are wind, water, fire, and explosive action
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