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Question
Are parthenocarpy and apomixis different phenomena? Discuss their benefits.
Solution
yes, parthenocarpy and apomixis are different phenomenon.
Importance of Parthenocarpy
- The fruit production without fertilisation of the ovary is called parthenocarpy. This phenomenon is applied for the commercial production of seedless fruits. e.g., banana, grapes.
- This is more useful far the juice industries.
Importance of Apomixis
- During apomixis, chromosomal segregation and recombination does not occur. So characters are stable for several generations.
- It simpilfiers commercial hybridised production because isolation is not necessary to produce F 1 F1 or maintain parental generation.
- Adventive embryony is being used in the production of uniform root-stock and virus-free varieties.
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RELATED QUESTIONS
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 ______.
The phenomenon observed in some plants wherein parts of the sexual apparatus are used for forming embryos without fertilization is called ______
Are pollination and fertilisation necessary in apomixis? Give reasons.
Assertion: Apomictic embryos are genetically identical to the parent plant.
Reason: Apomixis is the production of seeds without fertilization.
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.
Explain following term:
Apomixis
