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How many cells are present in the embryo sac immediately after pollen tube ruptures within the embryo sac?

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Important Questions on Sexual Reproduction in Flowering Plants

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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
In angiosperms, the development of male gametophyte takes place from ___________.
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
The process of double fertilization is the
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Function of filiform apparatus is to:
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
What is triple fusion? Name the nuclei involved in triple fusion.
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
An angiosperm was identified with its endosperm of 6n. Assuming that this is a self-pollinating species, which one of the following is the correct ploidy of the parent?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Describe the process of double fertilisation in angiosperms. What is its significance?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
A flower with Tt genotype is cross - pollinated by TT pollens. What will the genotypes of the resulting endosperm and embryo, respectively, be?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
What is triple fusion? What are the nuclei involved in triple fusion?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
The additional nuclear ploidy levels found in a diploid angiosperm species in full bloom compared to its vegetative stage are
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Which cell of the female gametophyte is involved in the formation of primary endosperm nucleus (PEN) after fertilization ?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization

What is double fertilization? Describe the process with diagrams from the stage of megaspore formation to zygote formation.

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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Union of Pronuclei of the gametes is called ___.
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
What is triple fusion? Write the significance of it.
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Amphimixis is:
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Define triple fusion. What is the product of this process?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Describe double fertilization diagrammatically.
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Why the process of fertilization in angiosperm is referred as double fertilization?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Angiospermic plants are characterised by
(i) Double fertilisation
(ii) Triploid endosperm
(iii) Diploid endosperm
Choose the correct option from the following regarding above statements?
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
An apple showing monosporic type of embryo sac development assumed to develop a fruit with 12 seeds. Find out the no. of chromosomes present in megaspore mother cell, functional megaspores, egg cells, synergids, antipodals, zygote and PEN
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Biology>Reproduction>Sexual Reproduction in Flowering Plants>Double Fertilization
Double fertilization is exhibited by: