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प्रश्न
If the endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in the root tip cells will be ______.
विकल्प
8
16
24
32
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उत्तर
If the endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in the root tip cells will be 16.
Explanation:
The endosperm in angiosperms is usually triploid (3n), formed by the fusion of one male gamete (n) with two polar nuclei (each n), making its chromosome number three times the haploid number (n). Given the endosperm has 24 chromosomes, 24 = 3n, so n = 8. The root tip cells belong to the diploid sporophyte (2n), so the number of chromosomes = 2 × 8 = 16.
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संबंधित प्रश्न
Describe the development of endosperm after double fertilisation in an angiosperm.
Draw a labelled mature stage of a dicotyledonous embryo.
Endosperm of angiosperm is __________.
(A) haploid
(B) diploid
(C) triploid
(D) tetraploid
In which of the following the primary endosperm nucleus undergoes free nuclear division or karyokinesis?
Identify the characteristic feature/s of helobial endosperm.
Which of the following triggers an acrosomal reaction of the sperm?
At what stage of endosperm development, will you observe nuclear or cellular type of endosperm?
Ex-albuminous seeds differ from albuminous seeds in ____________.
In angiosperms, triple fusion is required for the formation of ______.
The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes?
