Question

Formation of an extra embryo from nucellus or integument is

• A. Simple polyembryony
• B. Adventive polyembryony
• C. Vegetative polyembryony
• D. Cleavage polyembryony

Answer 1

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.

So, the correct answer is B.