Question

describe the common mode of reproduction in angiosperms?​

Answer 1

In angiosperms or flowering plants, there are several modes of reproduction. Generally, they are arranged in two large groups of reproduction, i.e., (i) asexual or vegetative and (ii) sexual types.

In asexual or vegetative reproduction, the offspring are produced from the somatic cells, while in sexual reproduction there is fusion of male and female gametes.

In the case of vegetative reproduction, any part of the plant, i.e., stem, root or leaf, is capable of growing into a new plant, in addition to performing its sexual functions. Sometimes, in certain plants, buds and bulbils are developed, which develop into new plants.

In sexual reproduction, the gametes from male and female organs of the flower are fused to produce a zygote. In angiosperms, these organs are generally called, androecium and gynoecium, respectively.

In some plants, certain special modes of reproduction are found, which are commonly known as parthenogenesis, sporophytic budding, polyembryony, apomixis, apospory, and micro- propagation. The production of synthetic or artificial seeds is also possible through tissue culture.

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Answer 2

Answer:

There are two modes of reproduction in flowering plants, asexual and sexual.

Explanation:

Asexual reproduction is also known as vegetative propagation, in which plants are produced through the vegetative parts of the plants. The fusion of two gametes occurs in sexual reproduction.

• The male reproductive portion of an angiosperm includes filament and bilobed anther. Each lobe is consisting of two microsporangia or pollen sacs, whose feature is to supply the microspores or pollen grains.
• Each lobe has a few hypodermal cells which become more prominent and represents the archesporium. Later the archesporial cells divide into a parietal layer and primary sporogenous cells. The primary sporogenous cells will become spore mother cells and give rise to a group of four haploid microspores through meiotic divisions.
• These pollen grains are like the sperm of a flower for fertilization. The pollen grains are transferred to the stigma of the female reproductive part by means of pollinating agents. The compatible ones reach the ovary to fertilize the egg.