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प्रश्न
What is the structural unit of sexual reproduction in plant?
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उत्तर
Flower is the structural unit of the sexual reproduction in plant.
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संबंधित प्रश्न
Mature ovary forms the ______.
State the name of the functional unit concerned with sexual reproduction.
Name the part made up of the stigma, style and ovary.
Name the swollen lower part of the carpel.
Name the male part of the flower.
Where is the female gamete formed in flowering plants?
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Explain the terms 'cross-pollination'?
How do the insects help in cross-pollination?
How is the process of pollination different from fertilization?
What is seed?
What is meant by ‘unisexual flowers’?
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
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Find the odd-one out, giving reason:
Anther, pollen grain, ovule male gamete
Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.
Explain the process of fertilisation in flowers.
“Cell division is a type of reproduction in unicellular organism.” Justify.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
Answer the following question.
List two agents of pollination?
__________ is present in unisexual flower.
Pollen grains from anther are transferred to the stigma.
Explain the sexual reproduction process in plants with a diagram.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
The essential parts of a flower are ______.
Sperm and egg nuclei fuse due to ______.
Length of pollen tube depends on the distance between ______
Which out of the following processes does not lead to the formation of clones.
Where is the zygote located in the flower after fertilization?
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
Double fertilization is exhibited by ______
What is the function of calyx?
Triple fusion involves ______.
The pollen tube usually enters the embryo sac ______.
State the post-fertilisation changes that lead to fruit formation in plants.
In male reproductive whorl of a flower the archesporial cells are formed by ______.
