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प्रश्न
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
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उत्तर
The number of chromosomes in a female gamete is equal to the number of chromosomes in a male gamete, i.e., 24.
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संबंधित प्रश्न
A student identified the various parts of an embryo of a gram seed and listed them as given below :
(I) Testa
(II) Plumule
(III) Radicle
(IV) Cotyledon
(V) Tegmen
Out of these the actual parts of the embryo are :
(A) I, II, III
(B) II, III, IV
(C) III, IV, V
(D) II, IV, V
What are the reproductive organs in a flower?
Explain the terms 'cross-pollination'?
How is the process of pollination different from fertilization?
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the zygote?
Mention the function of Flower.
The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :
A. Soak the seeds in plain water and keep them overnight.
B. Cut open the soaked seed and observe its different parts.
C. Take some healthy seeds in a petri-dish.
D. 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) C, A, D, B
(b) C, D, A, B
(c) A, C, D, B
(d) A, C, B, D
Explain the process of fertilisation in flowers.
Explain sexual reproduction in plants.
Draw a diagram of the longitudinal section of a flower and label the following parts.
Pollen tube reaches the embryo sac via style.
Give scientific reason.
Fertilization in plants is called double fertilization.
The male reproductive part of a flower is ______.
Identify the female gametophyte in angiosperms.
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
Which out of the following processes does not lead to the formation of clones.
What is the function of calyx?
What is puberty?
