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प्रश्न
Explain what you understand by sexual reproduction.
उत्तर
- Sexual reproduction requires two parents, one male and the other female. The male parent generates the male gamete or sex cell (sperm), whereas the female parent produces the female gamete or egg cell (ovum).
- When sperm and egg cells merge, they generate a third cell called the zygote. Fertilisation is the process by which sperm and egg cells fuse and produce a zygote.
- The zygote is the starting cell of a new creature. It grows into a complete creature throughout time. Sexual reproduction in flowering plants happens through the generation of seeds. Flowers are the primary organs involved in plant sexual reproduction.
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संबंधित प्रश्न
How does the process of fertilisation take place in flowers?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
Find the odd-one out, giving reason:
Anther, pollen grain, ovule male gamete
Explain the sexual reproduction process in plants with a diagram.
Observe the figure below. Write functions of the labelled parts.
Write the events involved in the sexual reproduction of a flowering plant.
a. Discuss the first event and write the types.
b. Mention the advantages and the disadvantages of that event.
The process of release of eggs from the ovary is called ______
The ovaries of different flowers may contain
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
