Question

Match List I with List II and select the correct answer using the codes given the lists.

List-I(Meaning)	List-II(Phenomenon)
a. Embryos arise directly from diploid saprophytic cells(nucleus or integuments)	$1$. Parthenogenesis
b. An archesporium differentiates but the megaspore mother cell develops into an unreduced embryo sac	$2$. Polyembryony
c. Many embryos arising in one ovule	$3$. Adventitious embryony
d. The development of embryo from unfertilized egg	$4$. Diplospory

• A. A-$1$, B-$2$, C-$3$, D-$4$
• B. A-$3$, B-$4$, C-$2$, D-$1$
• C. A-$3$, B-$2$, C-$4$, D-$1$
• D. A-$3$, B-$1$, C-$4$, D-$2$

Answer 1

The correct option is B A-$3$, B-$4$, C-$2$, D-$1$

The correct answer is B.

In adventitious embryony, an embryo is formed directly from nucellus or integument tissue.

In diplospory, the embryo sac is derived from the megaspore mother cell either directly by mitotic division or by interrupting meiosis. In the mitotic diplospory, the megaspore mother cell divides mitotically thrice to form 8 nuclei. The embryosac is unreduced and have same number of chromosomes and genetic material.

Polyembryony is the phenomenon of two or more embryos developing from a single fertilized egg. Due to the embryos resulting from the same egg, the embryos are identical to one another, but are genetically diverse from the parents.

Parthenogenesis is a form of reproduction in which an egg can develop into an embryo without being fertilized by a sperm.