Question

why must seeds be dispersed what are the different agents of dispersal



class 4

Answer 1

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Seed must be dispersed because plants cannot walk around and take their seeds to other places, they have developed other methods to disperse (move) their seeds. The most common methods are wind, water, animals, explosion and fire. ... The most common methods are wind, water, animals, explosion and fire.

hope it was helpful to you

Answer 2

Dear, students :)

: $\implies$ The plant produces many seeds. Seeds fall on the ground from plants and give rise to new plants. Seeds are dispersed to far off places to reduce competition among plants for sunlight, water, minerals, and space. This is known as seed dispersal.

The process of seed dispersal takes place by:

(i) Wind: Some seeds are carried to far-away places by wind. The seeds which are carried by wind can have winged seeds like in drumstick and maple. They can have light seeds like in grasses, or can have hairy seeds like in oak.

(ii) Water: Some seeds are dispersed via water. These seeds which are dispersed through water have a tendency to float. They have a spongy or fibrous outer coat such as in coconut, which aids them in floating.

(iii) Animals: Some seeds are dispersed with the help of animals. The seeds dispersed by animals have spine or hook-like structures to get attached to the body of the animal, for e.g. Xanthium.

(iv) Other methods of seed dispersal involve sudden bursting of the fruit with a jer k, which results in the scattering of seeds to new places, sometimes a long way from the parent plant.

For example, this process occurs in fruits of castor and balsam.

Hope you understand it now!!:)) cheers !!