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Question
The phenomenon observed in some plants wherein parts of the sexual apparatus are used for forming embryos without fertilization is called ______.
Options
parthenocarpy
apomixis
vegetative propagation
sexual reproduction
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Solution
The phenomenon observed in some plants wherein parts of the sexual apparatus are used for forming embryos without fertilization is called apomixis.
Explanation:
Apomixis is when parts of the sexual apparatus in some plants make embryos without fertilization. This means that sexual reproduction is replaced by an asexual process. This allows embryo development without meiosis or syngamy, preserving desirable traits in plants indefinitely. It is observed in some species of Asteraceae and grasses and is important in horticulture and agriculture for maintaining hybrid vigor.
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RELATED QUESTIONS
What is apomixis?
Explain various categories of apomixis.
Identify the CORRECT statements with respect to non-recurrent apomixis.
i. Plants produced by this method are generally sterile and do not reproduce sexually.
ii. In this, megaspore mother cell undergoes usual meiotic division and a haploid embryo sac is formed.
______ refers to the formation of seeds without fertilization.
A form of asexual reproduction that mimics sexual reproduction is ______.
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Assertion: Apomictic embryos are genetically identical to the parent plant.
Reason: Apomixis is the production of seeds without fertilization.
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Haploid cells belong to ______.
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Apomixis was classified by whom?
In recurrent apomixis, the nuclei of the embryo sac are of which ploidy?
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In Diplospory, a diploid embryo sac is formed directly from which structure?
What is another name for Diplospory?
What happens to the megaspore mother cell (MMC) in Apospory?
What is another name for Apospory?
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Adventive embryos developing alongside the normal zygotic embryo give rise to what?
Scientists are trying to introduce apomixis into which crops for better food production?
