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Question
Observe the figure below. Write functions of the labelled parts.
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Solution
- Gynoecium (Carpel): It is an essential whorl. It is consists of stigma, style and ovary. It acts as a female reproductive part of the flower. It is responsible for the production of female gametes.
- Androecium (Stamen): It is an essential whorl. It is consists of anther and filament. It acts as a male reproductive part of the flower. It is responsible for the production of male gametes.
- Calyx and corolla: Calyx and corolla are accessory whorls. They are responsible for the protection of inner (essential) whorls.
- Pedicel: Pedicel is a small stalk which supports the flower.
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Match the following:
| Column A | Column B |
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How does the process of fertilisation take place in flowers?
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Mature ovary forms the ______.
Name the part made up of the stigma, style and ovary.
Name the male part of the flower.
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What is the name of female organ of a flower (other than carpel)?
Fill in the following blank with suitable word :
The ovary of a flower becomes ....... after fertilisation.
What is seed? What are the parts of a seed? Explain with the help of a labelled diagram.
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Which of the following statements are true for flowers?
(i) Flowers are always bisexual.
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Seeds are formed from________.
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.
Distinguish between unisexual and bisexual flowers giving one example of each. Draw a diagram showing process of germination of pollen grains on stigma and label the following parts:
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Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
What is phototropism?
Which of the following is not an unisexual flower?
a) Coconut
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Prepare a slogan for campaign against female foeticide.
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What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
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