A) Allium type
B) Oenothera type
C) Polygonum type
D) Adoxa type
Correct Answer: C
Solution :
The most common type of embryo sac is Polygonum type, which is derived from only chalazal one of the 4 megaspore nuclei formed as a result of meiosis in the megaspore mother cell. Allim type of embryo sac is bisporic embryo sac, in which embryo sac is derived from the chalazal dyad cell. Oenothera type (monosporic) of embryo sac is derived from the micropylar megaspore of tetrad and is 4 nucleate. Mature embryo sac consists of an egg apparatus and a uninucleate central cell. Adoxa type (tetrasporic) of embryo sac is eight nucleate, formed after a single post meiotic, mitosis, in organisation it is similar to Polygonum.
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