Advertisements
Advertisements
प्रश्न
Which of the following is the correct sequence of events of sexual reproduction in a flower?
पर्याय
pollination, fertilisation, seedling, embryo
seedling, embryo, fertilisation, pollination
pollination, fertilisation, embryo, seedling
embryo, seedling, pollination, fertilisation
उत्तर
pollination, fertilisation, embryo, seedling
Explanation -
During sexual reproduction, the first event that occurs is pollination, that is, transfer of pollen grains from the anther to the stigma. After pollination, pollen grain germinates on the stigma to form pollen tube which carries male gametes to the egg present inside the ovule for fertilisation. After fertilisation, a zygote is formed which develops into an embryo and ovule develops into a seed. On seed germination, embryo develops into a seedling under appropriate conditions.
APPEARS IN
संबंधित प्रश्न
Describe the different methods of asexual reproduction. Give examples.
State the main difference between asexual and sexual reproduction.
In the following Question, the Assertion, and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following
Assertion: In human beings, the female. play a major role in determining the sex of the offspring.
Reason: Women have two X chromosomes.
Characters transmitted from parents to offspring are present in
The correct sequence of reproductive stages seen in flowering plants is
Lila observed that a pond with clear water was covered up with a green alga within a week. By which method of reproduction did the algae spread so rapidly?
Why is it not possible to reconstruct the whole organism from a fragment in complex multicellular organisms?
How does reproduction take place in malarial parasites?
Assertion (A): Most of the plants close their stomata at night.
Reason (R): Closing of stomata helps to conserve water as large amount of water evaporates from the leaves.
Make your own cactus garden by collecting pieces cut from different kinds of cacti. Grow the variety in one single flat container or in separate pots.
