Meaning of Propagation



Download 12.24 Kb.
Date12.01.2023
Size12.24 Kb.
#60350
Document (3)
3RD TERM J1 SOCIAL STUDIES

Meaning of Propagation
Propagation is the production of new plants as independent units. The two main methods (types) of propagation are: (a) Sexual propagation.
(b) Asexual or vegetative propagation.

16:1 SEXUAL PROPAGATION


Most flowers contain both male and female parts. The male parts, stamens, bear anthers that produce the male sex cells or pollen grains. The female part consists of the Ovary which produces the female sex cells or ovules. When pollen grains land on the stigma, pollination takes place. The pollen tube goes down the style and fertilization takes place.
Fertilization is the fusion of a male and female nuclei to form a zygote which develops by cell division into an embryo. The seed is then formed from this embryo.
The seed is, therefore, a product of sexual reproduction in plants. Examples are found in okra, maize, groundnut etc.
Definition: When plants are raised from seeds which have been formed as a the result of fusion of male and female gametes, it is term sexual propagation.
Download 12.24 Kb.

Share with your friends:




The database is protected by copyright ©ininet.org 2024
send message

    Main page