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प्रश्न
Explain what you understand by sexual reproduction.
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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
Name the parts labelled as A, B, C and D in the diagram given below:-
Sketch the reproductive parts of a flower.
Mature ovary forms the ______.
What is the name of female organ of a flower (other than carpel)?
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
Give one example each of unisexual and bisexual flowers. Differentiate between the two types of pollination that occur in flowers. What happens when a pollen lands on a suitable stigma? Write about the events that occur till the seed formation in the ovary.
Pollen grains are produced by ______
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
Double fertilization means ______.
