Question

1) What is vegetative propagation? Illustrate with one example.
2) Describe the various ways of seed dispersal.
Class 7( Science) ​

Answer 1

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Begonia and Bryophyllum are examples of vegetative propagation by leaves. This is a form of asexual reproduction in which new plants grow from the buds growing on the margin of the leaves. These buds are reproductive in nature and when they fall on the ground they germinate and form a new plant.

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There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus. Dispersal involves the letting go or detachment of a diaspore from the main parent plant.

Answer 2

Answer:

1. Begonia and Bryophyllum are examples of vegetative propagation by leaves. This is a form of asexual reproduction in which new plants grow from the buds growing on the margin of the leaves. These buds are reproductive in nature and when they fall on the ground they germinate and form a new plant.
2. There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus. Dispersal involves the letting go or detachment of a diaspore from the main parent plant.