Question

Draw the structure of a flower. Label its parts ( any 6 ).
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Answer 1

For Structure of flower refer to the attachment.

Explanation:

The flowering plants or angiosperms bear special reproductive parts located in the flower . Various parts of flower are ; sepals , petals , stamens and carpels.

• Most flowers have both male and female reproductive organs. The flower may be unisexual ( papaya or watermelon ) when it contains either stamen or carpel or bisexual ( Hibiscus , mustard ) when it contains both stamen and carpel . It has male reproductive oart called stamen and female reproductive part called carpel . Carpel is made up of 3 parts . The swollen bottom part is the ovary , middle elongated part is the style and the terminal part which may be sticky is the stigma . The ovary contains ovules and each ovule has an egg cell.
• Each stamen consists of stalk called filament, and a flattened fertile top is called anther. the anther produce the pollen grains. The pollen grains produce male gametes which fuse with ( egg cell ) female gamete present in ovule. This fusion of germ cells or fertilization gives zygote which grows into a new plant.

Pollination : It is the process of transfer of pollen grains from the anther to the stigma of flower. If this transfer of pollen occur in the same flower, it is referred to self Pollination whereas if the pollen is transferred from one flower to another is known as cross-pollination.

• This transfer is carried out by different agencies like wind, water, insects or animals.

Answer 2

Explanation:

1.Petals

=>This is a bright coloured part that attracts bees, insects, and birds. Colour of petals varies from plant to plant; some are bright while some are pale coloured. Thus, petals help us to differentiate one flower from another.

2.Sepals

=>Sepal is the green coloured part beneath the petals to protect rising buds. Some flowers have fused petals-sepals while a few have separated petals-sepals.

3.Stamen

=>This is the male reproductive organ and is also known as Androecium. It consists of two parts namely: anther and filaments.

4.Pistil

=>This is the innermost part and the female reproductive organ of a flower which comprises three parts -stigma, style and ovary. This is collectively known as the pistil.

The anther is a yellowish, sac-like structure, involved in producing and storing the pollens.The filament is a slender, threadlike object, which functions by supporting the anther.