Fill in the blanks:
(a) The production of new individuals from the vegetative part of the parent is called _____.
(b) A flower may have either male or female reproductive parts. Such a flower is called _______.
(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _____.
(d) The fusion of male and female gametes is termed as _____.
(e) Seed dispersal takes place by means of _____, _____, and _____.

AcademicBiologyNCERTClass 7

(a) Production of new individuals from the vegetative part of the parent is called vegetative propagation.

(b) A flower may have either male or female reproductive parts. Such a flower is called a unisexual flower.

(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as pollination.

(d) The fusion of male and female gametes is termed fertilization.

(e) Seed dispersal takes place by means of air, water, and wind.

Explanation:

Vegetative propagation is an asexual method of reproduction in which plants can grow and reproduce from stems, roots, and leaves.

New plants can grow from the detached parts (stems, roots, and leaves) of the plant because it has sufficient cells to divide and produce a new individual.

Cutting and grafting are two different methods of vegetative propagation.


Seed dispersal is the dispersion or movement or spreading of seeds away from the site of origin or parent plant. It can be done in different modes, such as:

(i) Biotic agents: Birds and animals.

(ii) Abiotic agents: Gravity, wind, ballistic, water.

raja
Updated on 10-Oct-2022 12:46:24

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