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Pollen tube enters in embryo sac through

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Important Questions on Sexual Reproduction in Flowering Plants

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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 68
Which of the following secrete chemical substances for attracting pollen tube towards micropyle of ovule
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 69
The fusion product of polar nuclei and male gamete is-
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 70
How many meiotic divisions are essential for formation of 100 seeds in cyperaceae family-
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 71
In angiosperms normally after fertilization
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 72
If the number of haploid chromosomes in Gymnosperm is 12, then what will be the number of chromosomes in root and endosperm -
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 73
In the embryo of a typical dicot and a grass, true homologous structures are:
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 74
In the flower, if the megaspores forms without meiosis and if one of the megaspores develops into an embryosac, its nuclei would be:
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-3>Q 75
Which one of the following pairs of plant structure has haploid number of chromosomes?