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प्रश्न
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
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उत्तर
The first step in sexual reproduction is gamete formation. In this step, the number of chromosomes gets halved. Thus, each gamete receives half the number of chromosomes to that of somatic cells. During fertilisation, the fusion of male and female gametes takes place, which results in the number of chromosomes in the zygote to be equal to that of somatic cells. Thus, the chromosomal number of the sexually producing parents and their offspring is the same.
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संबंधित प्रश्न
Sketch the reproductive parts of a flower.
Where are a plant's sex organs located?
Explain the terms 'cross-pollination'?
What is seed? What are the parts of a seed? Explain with the help of a labelled diagram.
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Differentiate between self-pollination and cross-pollination.
The seed that contains the future plant is called the ______
Type of sexual reproduction is ______.
The pollen tube usually enters the embryo sac ______.
