Question

Placenta of a flower is a tissue that
A. Forms pollen grains
B. Attaches stamens with corolla/ sepals/ tepals
C. Bears ovule
D. Bears corolla

Answer 1

Hint: The reproductive parts of a flower are the stamen (male) and carpel (female). The carpel comprises the stigma, style and ovary. The ovary, also referred to as the embryo sac, may contain one or more ovules. The collective term for female reproductive organs is gynoecium and that for male reproductive organs is androecium.

Complete step by step answer:
-The ovules are attached to the ovary by the funiculi. The part of the ovary to which the funiculi is attached is known as the placenta.
-The ovule develops into a seed after fertilization.
-In gymnosperms, the ovule lies uncovered. Whereas in angiosperms, the ovules are enclosed by the ovary.
-Placentation refers to the attachment of the ovules to the surface of the carpel.
-Placentation is divided into various types based on the arrangement of the ovules inside the ovary.
-The various types are basal, parietal, axile, free central and marginal.
-The pollen grains produced by the anther attach to the stigma. The pollen grain then grows a pollen tube that travels through the style.
-The sperm from the pollen grain migrates into the ovule and fertilizes the egg cell.
-The embryo develops into the seed while the ovary grows into the fruit.
Placenta of a flower is a tissue that bears ovules. So, the correct answer is option(C).

Note:
-Based on the ovary and the placentation type that the fruit develops from, the fruits can be classified into simple fruits, aggregate fruits and multiple fruits. The edible part of different fruits is different.
-One of the most common examples of marginal placentation is pea that is Pisum sativm.