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प्रश्न
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
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उत्तर
(a) A represents the carpel. The carpel is composed of the stigma, style and ovary.
(b) The ovary contains gametes in the form of ovules.
(c) B represents the stamen. The swollen tip of the stamen is the anther.
(d) The anther has pollen grains.
(e) The stamen (B) is a male part and the carpel (A) is a female part.
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संबंधित प्रश्न
Name the parts A, B and C shown in the diagram and write their functions.
How does the process of fertilisation take place in flowers?
Where are the pollen grains produced?
Where are a plant's sex organs located?
The length of pollen tube depends on the distance between :
(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
Prepare a slogan for campaign against female foeticide.
Draw a diagram of the longitudinal section of a flower and label the following parts.
What is meant by pollination?
Find an odd one out.
Give scientific reason.
Fertilization in plants is called double fertilization.
Which of the following are the chemical components of the wall of pollen tube?
Identify the female gametophyte in angiosperms.
The process of release of eggs from the ovary is called ______
The ovaries of different flowers may contain ______.
Sketch and label the essential and accessory whorls of flower.
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
What is puberty?
