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प्रश्न
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.
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उत्तर
Following is a diagram of the longitudinal section of a pistil exhibiting germination of pollen on stigma:
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संबंधित प्रश्न
Name the swollen lower part of the carpel.
What is made in ovary of a flower?
What type of plants reproduce by sexual reproduction method?
Name the part of a seed which grows into root.
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
Answer the following question.
List two agents of pollination?
Calyx : Sepals : : Corolla : ________________
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
Conidia are formed endogenously while zoospores are formed endogenously.
Double fertilization is exhibited by ______
