The correct option is
C Ovule
The correct option is C.
Explanation for correct option:
- The embryo sac also known as the female gametophyte is present in the ovule.
- It consists of one central cell containing two polar nuclei, three antipodal cells at the chalazal end, and one egg cell along with two synergid cells at the micropylar end.
- It is also referred to as a seven-celled, eight-nucleate structure.
Explanation for incorrect options:
Option A:
- The fusion of male and female gametes produces a zygote which develops into an embryo.
- It is the new plant that is protected by the seed.
Option B:
- Plumule, radicle, epicotyl, hypocotyl, and cotyledons constitute the embryonic axis.
- When the seed germinates, the plumule gives rise to the shoot system and the radicle gives rise to the root system.
- The region between the attachment points of the cotyledons, also called the cotyledonary node and the plumule is called epicotyl.
- The region between the cotyledonary node and the radicle is called the hypocotyl.
Option D:
The endosperm is present inside the seed which provides nutrition to the embryo to initiate germination.
Final answer: Embryo sac occurs in the ovule.