Question

Q1.explain the structure and functions of the reproductive organ of flowers..

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Answer 1

Question:-

• Explain the structure and functions of the reproductive organ of flowers.

Answer:-

$\sf\purple{Flower}$

• A flower has four whorls =

1. Sepals
2. Petals
3. Stamen
4. Pistil (carpel)

• The leaf like green structures at the base of the flowers are called as Sepals,which are the outermost whorl of the flower.

• Petals, the second whorl, are the brightly colored structures to attract insects.

• Stamen, is the third whorl of the flower. It is also the male reproductive organ of the flower. It has a long stalk called filament and a swollen tip called anther. Pollen grains are present in the anther. Pollen grains contain male gametes.

• The innermost whorl of the flower is pistil or carpel. It is the female reproductive organ of the flower. It has three parts = a swollen, basal portion called ovary, which continues into a long style that ends in the structure called as stigma. Inside the ovary lie ovules, that contains the female gamete or egg.

Note:-

• Check the first attachment for the diagram of parts of a flower.
• Check the second attachment for the parts of a carpel.

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Additional information:-

Q. What is reproduction?

• The process of producing new individuals from the parents.

Q. What is fragmentation?

• The breaking up of the body of a plant into two or more parts of the fragment, with each part growing into a new plant.

Q. What is fertilisation?

• Fusion of the male and female gametes to form zygote.

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Key points:-

• Reproduction helps in the continuity of life on the earth.

• The two modes of reproduction are

1. Asexual reproduction
2. Sexual reproduction

• Plants reproduce vegetatively from their roots, stems and leaves.

• Flower is the reproductive organ of the plant.

• Flowers can be bisexual or unisexual.

• The male reproductive part of the flower is called Stamen and female reproductive part of the flower is called as pistil.

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