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प्रश्न
A flower may have either male or female reproductive parts. Such a flower is called ______.
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उत्तर
A flower may have either male or female reproductive parts. Such a flower is called unisexual.
Explanation:
Unisexual flowers contain only one type of reproductive organ, either stamens (male) or pistils (female), and not both.
APPEARS IN
संबंधित प्रश्न
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.
When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube b from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of d contained in structure E. the fusion of C and D forms a new cell f which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F?
What part is played by stamens and carpels in reproduction?
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.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
Find an odd one out.
The 3-celled egg apparatus at the micropylar end comprises of ______
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
Explain the post fertilization changes that occur in the ovary of a flower.
