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Standard XII
Biology
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The process b...
Question
The process by which haploid embryo is formed from haploid egg without fertilization is called as?
A
Apospory
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B
Apogamy
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C
Agamospermy
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D
Vegetative reproduction
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Solution
The correct option is
C
Agamospermy
Vegetative reproduction is a form of asexual reproduction of a plant. Only one plant is involved and the offspring is the result of one parent.
Agamospermy is a asexual reproduction in which seeds are produced from unfertilized ovules.
Apogamy is a type of reproduction, occurring in some ferns, in which the sporophyte develops from the gametophyte without the fusion of gametes.
Apospory is the production of gametophyte directly from diploid cells of the sporophytes without the spore formation.
Thus, the correct answer is option C.
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A dandelion produces seeds without meiosis or fertilisation. The adult sporophyte forms diploid, rather than haploid, megaspores that develop into ovules containing diploid, rather than haploid nuclei. One of the nuclei in each ovule becomes an egg and develops directly, without fertilisation, into an embryo that is genetically identical to its parent. This type of reproduction is called ____________________.
Q.
Consider the following statements.
Apomixis is phenomenon in which.
a. Fertilization occurs regularly
b. Fertilization does not occur at all
c. Embryo is formed directly from an egg or male gamete
d. Formed embryo may be haploid or diploid
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