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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?
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उत्तर
(i) Part ‘A’ labelled is pollen grain.
(ii) Part ‘B’ is stigma. The pollen grain reaches the stigma during pollination.
(iii) Part ‘C’ is the pollen tube. The pollen tube carries the gametes to the embryo sac for fertilisation.
(iv) Part ‘D’ is the egg cell. After fertilisation with the male gametes, the egg cell forms the zygote.
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संबंधित प्रश्न
A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below:
Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.
On examining the list the teacher remarked that only three parts are correct. Select three correct parts from the above list:
(a) Testa, Radicle, Cotyleddon
(b) Tegmen, Radicle, Micropyle
(c) Cotyledon, Plumule, Testa
(d) Radicle, Cotyledon, Plumule
Where are a plant's sex organs located?
Fill in the following blank with suitable word :
The.......... at the base of the carpel contains egg cells.
How is the process of pollination different from fertilization?
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
Fill in the blank by selecting suitable word:
A flower that bears both the male and the female parts is known as __________ flower.
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ flower.
Pollen grains are produced by ______
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
Give any two examples of agents of pollination.
