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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?
Are pollination and fertilization necessary in apomixis?
In ______a diploid sporophyte cell produces a diploid gametophyte without undergoing meiosis.
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.
Identify the CORRECT term which describes the following condition.
In some plants, the female gamete develops into embryo without fertilization.
Adventive embryony can be observed in ______.
A form of asexual reproduction that mimics sexual reproduction is ______.
Are pollination and fertilization necessary in apomixis? Give reasons.
Assertion: Apomictic embryos are genetically identical to the parent plant.
Reason: Apomixis is the production of seeds without fertilization.
Apospory is the direct formation of ______.
Which of the following defines apomixis correctly?
- Production of the embryo from an unfertilised egg.
- Production of seed without syngamy.
- Production of fruit without fertilisation.
- Production of seed without meiosis.
- Production of seed without mitosis.
Choose the correct options.
Haploid cells belong to ______.
Give significance of apomixis.
Explain following term:
Apomixis
What is the importance of apomixis?
