Question

Fertilization in plants occur in the
(a)Embryo sac
(b)Style
(c)Pollen tube
(d)Stigma

Answer 1

Hint: The oval structure present in the ovule of flowering plants is known as the female gametophyte. This serves as the egg for fertilization in sexual reproduction.

Complete step-by-step answer:
Fertilization takes place in the embryo sac. The oval structure present in the ovule of flowering plants is known as the embryo sac or female gametophyte and is the megaspore of a plant. It gives rise to the endosperm and forms the egg cell or nucleus developing into an embryo after fertilization.

Additional Information: Style- the stalk of the pistil. When pollen reaches the flower, it begins to grow a tube through the style which will eventually reach the ovary. It is the location where pollen tubes travel to deliver sperm cells to the egg, this way it helps fertilization. Also, style acts as a buffer since only compatible pollen can grow a pollen tube.
Pollen tube- a tubular structure produced by the male gametophyte when it germinates. It penetrates the style so that male gametes reach the ovule. In some, such as Cucurbitaceae, the tube branches after entering the ovule, and sometimes the tube may even swell and form a bulla.
Stigma- the part where pollen germinates and is part of the pistil. The stigma is the receptive tip of several fused carpels of a carpel in the flower. Stigmas are the landing zone or the entrance; they are adapted to trap pollen with hairs, flaps, and other surfaces to increase their efficiency. Sometimes stigmas are covered with a waxy, sticky substance for trapping the pollen.
So, the correct answer is ‘Embryo sac'.

Note: Megaspore (or macrospores) is a type of spore that is present in certain plants. The megaspore is produced inside the nucleus of the ovule in the gymnosperms and flowering plants and it germinates into the female gametophyte.