Question

Formation of additional embryo from part of the same embryo or embryo sac is

• A. True polyembryony
• B. False polyembryony
• C. Adventitive polyembryony
• D. Haploid-diploid polyembryony

Answer 1

The correct option is A True polyembryony

• Polyembryony is the phenomenon of occurrence of two or more embryos in one ovule. When the embryos arise in the same embryo sac it is known as true polyembryony.
• When extra embryos develop in one embryo sac other than the zygotic embryo sac, it is known as false polyembryony.
• When the embryos are formed from cells of nucellus which penetrate into the embryo sac, it is known as adventitious polyembryony such as in mango.
• Sometimes when one of the embryo develops from synergid, which is haploid tissue and other from nucellus which is diploid, then it is known as haploid-diploid polyembryony such as in flax.
• Thus, the correct answer is option A.