Formation of an extra embryo from nucellus or integument is
A
Simple polyembryony
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B
Adventive polyembryony
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C
Vegetative polyembryony
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D
Cleavage polyembryony
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Solution
The correct option is B Adventive polyembryony
• Simple Polyembryony is the occurrence of more than one embryo in the same seed.
• Adventive Polyembryony is a kind of Apomixis in which there is a formation of extra embryos due to sporophytic budding. One or more diploid sporophytic cells, either nucellus or integuments undergo stages of embryogeny and eventually develop into mature embryos.
• Cleavage Polyembryony involves the cleavage of an embryo in which a single fertilized egg forms a number of embryos. The zygote divides several times irregularly to form a mass of cells which can develop into embryos.
Hence, the formation of an extra embryo from nucellus or integument is called adventive polyembryony.