Question

Best examples of polyembryony is ________
(a)Mango
(b)Citrus
(c)Capsicum
(d)Cocos

Answer 1

Seed is known to be the embryonic development which forms a plant later. As the name suggests, poly means multiple. So, polyembryony is the presence of multiple embryos in a seed.

Complete answer:
When a seed results in more than one embryo which developed from an ovum is known as polyembryony. These are identical to each other but are different from parents based on their genetic makeup. Some examples include citrus fruits, Opuntia etc.

Additional Information:
There are different types of polyembryony observed in plants.
Simple polyembryony - simple polyembryony occurs due to the presence of one or more embryo sac in the seed.
Mixed polyembryony - in this type of polyembryony, there is more than one pollen tube that enters the ovule and fertilizes the synergids.
Cleavage polyembryony - in cleavage polyembryony the zygote splits into two or more embryos and each individual part develops into a separate embryo
Adventive polyembryony - adventive polyembryony is seen when the diploid nucellus or integument cells take part in the formation of the embryo.
There are 2 more types of polyembryony which are differentiated in terms of natural or induced. When the polyembryony occurs naturally without any intervention of humans then it is known as natural polyembryony. Another name for natural polyembryony is spontaneous. When the process is induced then it is known as induced polyembryony

So, the correct answer is ‘Citrus’

Note: When the same embryo sac is responsible for giving rise to the multiple embryo sacs the condition is known as true polyembryony.
If embryos are developed from elsewhere other than embryo sac, then it is known as false polyembryony.
Cleavage polyembryony is frequently seen in gymnosperms than angiosperms.
Polyembryony was discovered by Anto Van Leeuwanhock in a citrus plant in 1719.