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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
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
The reproductive part of a plant is the ______.
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
Fill in the following blank with suitable word :
The.......... at the base of the carpel contains egg cells.
The correct sequence of reproductive stages occurring in flowering plants is ______
In what ways is fertilisation in a plant different from fertilisation in a human?
Explain the process of fertilisation in flowers.
Which type of development is observed in male gametophytes of plants?
The seed that contains the future plant is called the ______
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
