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प्रश्न
In what ways is fertilisation in a plant similar to fertilisation in a human?
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उत्तर
The process of fertilisation is similar in plants and humans as both involve male and female gametes and show internal fertilisation.
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संबंधित प्रश्न
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
The fusion of male and female gametes is termed as ______.
Explain what you understand by sexual reproduction.
Sketch the reproductive parts of a flower.
Where are a plant's sex organs located?
What is the function of a flower?
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
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
When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube b from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of d contained in structure E. the fusion of C and D forms a new cell f which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F?
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Explain the process of fertilisation in flowers.
Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
Identify the parts A, B, C, and D?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
State the number of sets of chromosomes present in a zygote.
Double fertilization is essential for formation of ______.
Given below is a diagram of a germinating seed. Label the parts that:
- gives rise to future shoot.
- gives rise to future root system.
- stores food.
