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प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:
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उत्तर
In the given figure,
A represents the pollen grain
B represents the pollen tube
C represents the ovary
D represents the female germ cell
संबंधित प्रश्न
How is the process of pollination different from fertilization?
Name the part of a seed which grows into shoot.
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
A student is asked to study the different parts of an embryo of pea seeds. Given below are the essential steps for the experiment :
(I) Soak the pea seeds in plain water and keep them overnight.
(II) Cut open the soaked seed and observe its different parts.
(III) Take some pea seeds in a petri dish.
(IV) Drain the excess water. Cover the seeds with a wet cotton cloth and leave them as it is for a day.
The correct sequence of these steps is
(A) III, I, IV, II
(B) III, IV, I, II
(C) III, I, II, IV
(D) III, II, I, IV
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Prepare a slogan for campaign against female foeticide.
What is meant by pollination?
Pollen grains are formed by _________ division in locules of anthers.
Draw a neat and labelled diagram.
Double fertilization in angiosperms
