Question

Which of the following statement is false about Hilum?
A. Hilum lies underneath micropyle
B. Scar over the seed coat
C. Growing seeds are attached to the fruit through the hilum
D. All of the above

Answer 1

Hint:
Before answering the question, it is essential to understand the nomenclature of the hilum.
A scar on the seed coat known as the hilum denotes the location of the seed's attachment to the ovarian tissue (via the funiculus). It regulates the interactions between the embryo and its surroundings. The cutin in the region of the hilum is one of several elements that affect the permeability of the seeds. Another route for viruses to enter the seeds is through the hilum.

Complete step by step answer:
It serves as a gauge of the maturity of the seeds when the hilum develops a black hue in physiologically developed seeds. Characteristic markers found on the seed coats of the seed plants include the hilum and the micropyle. Both of them are recommended as ways to drink more water.
Depending on the species, they may or may not be important for seed qualities like water absorption. They are also acknowledged as paths for viruses to enter the seeds. In the latter phases of seed production, the hilum regulates the water content. Through the cutin, the hilum regulates permeability and has the flexibility to both open and close depending on the situation.
Hilum demonstrates where the ovule attaches to the ovarian wall. On the contrary, micropyle reveals the location of the pollen tube's entrance to the ovary during fertilization. For the seed, the hilum and micropyle are both crucial.

Option ‘A’ is correct

Note:
Pratense and Lupinus arboreous, the Testa’s hilum is indeed an impermeable epidermis-based valve that is hygroscopic ally triggered. Whenever the relative humidity was lower, the hilum's crack opened, allowing the seeds to dry out; when it was high, the fissure closed, preventing moisture absorption.