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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.
APPEARS IN
संबंधित प्रश्न
How does the process of fertilisation take place in flowers?
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Mention the function of Flower.
Identify the odd. Stigma, Style, Pollen, Ovary.
Which type of development is observed in male gametophytes of plants?
Which among the following statements are true for sexual reproduction in flowering plants?
- It requires two types of gametes
- Fertilisation is a compulsory event
- It always results in formation of zygote
- Offspring formed are clones
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
Explain the post fertilization changes that occur in the ovary of a flower.
