Question

Draw a well labelled diagram of longitudinal section of flower and describe various floral organs.

Hint:

Flowers are designed for reproduction, and each part has a specific function, either for attracting pollinators or for the development of seeds.

Answer 1

Diagram of Longitudinal Section of Flower:
Below is a labelled diagram of the longitudinal section of a typical flower:

Description of Various Floral Organs:
1. Petals: These are the colored, leaf-like structures that attract pollinators like bees, butterflies, and birds. They form the outermost part of the flower.
2. Sepals: Sepals are the green, leaf-like structures that protect the flower bud before it blooms. They are usually found beneath the petals.
3. Ovary: The ovary is the swollen part of the pistil (female reproductive part) that contains the ovules. After fertilization, the ovary develops into the fruit.
4. Anther: The anther is part of the stamen (male reproductive part) and produces pollen grains, which contain male gametes (sperm cells).
5. Filament: The filament is the stalk that supports the anther.
6. Stigma: The stigma is the top part of the pistil that receives pollen during pollination. It is sticky to capture pollen grains.
7. Style: The style connects the stigma to the ovary and serves as a passage for pollen tubes to reach the ovules.
8. Ovule: The ovule is located inside the ovary. It contains the egg cell and, after fertilization, develops into a seed.
Conclusion:
The flower contains both male and female reproductive organs, with the stamen and pistil being the primary organs involved in reproduction. The floral organs work together to facilitate pollination and fertilization, leading to the formation of seeds.