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प्रश्न
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
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उत्तर
Ovules contain female gametes of a plant.
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संबंधित प्रश्न
Name and differentiate between the two modes of pollination in flowering plants.
Name the parts labelled as A, B, C and D in the diagram given below:
How is the process of pollination different from fertilization?
What is made in anther of a flower?
Explain the terms 'self pollination'
How do the insects help in cross-pollination?
How is the process of pollination different from fertilization?
(a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
(b) What name is given to (i) all the petals of a flower, and (ii) all the sepals of a flower?
(c) What are (i) stamen, and (ii) carpel, in a flower?
(d) What is the other name of carpel of a flower?
(e) What is the name of yellow powdery substance present in the anther of a flower?
Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seed, embryo
(b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
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.
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
Answer the following question.
List two agents of pollination?
Pollen grains from anther are transferred to the stigma.
The ovule of an angiosperm is technically equivalent to ______
Generally, in a pollen tube, which of the following moves to the tip of the tube?
The seed that contains the future plant is called the ______
Double fertilization is essential for formation of ______.
What is the structural unit of sexual reproduction in plant?
Explain the post fertilization changes that occur in the ovary of a flower.
