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प्रश्न
Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the flower.
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उत्तर
The four whorls of a flower are
- Calyx consist of of sepals
- Corolla consist of petals
- Androecium is the male reproductive part, stamens which consist of anther and filament.
- Gynoecium is the female reproductive part, pistil which consist of stigma, style, ovary.
In flowers, gametes producing organs are:
- Anther (Part of androecium) - pollen grains contain male gametes.
- Ovary (Part of gynoecium) - ovule contain egg (female gamete).
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संबंधित प्रश्न
A student has to perform the experiment "To identify the different parts of an embryo of a dicot seed." Select from the following an appropriate group of seeds:
(a) Pea, gram, wheat
(b) Red kidney bean, maize, gram
(c) Maize, wheat, red kidney bean
(d) Red kidney bean, pea, gram
State significance of pollination.
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
The correct sequence of reproductive stages occurring in flowering plants is ______
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
What part is played by stamens and carpels in reproduction?
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, 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:
(a) Female germ cell
(b) Male germ cell
(c) Ovary
Explain sexual reproduction in plants.
__________ is present in unisexual flower.
The essential parts of a flower are ______.
Identify the parts A, B, C, and D?
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
Generally, in a pollen tube, which of the following moves to the tip of the tube?
Identify the female gametophyte in angiosperms.
Sperm and egg nuclei fuse due to ______.
Length of pollen tube depends on the distance between ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
What are the agents for pollination?
