Question

Caruncle is derived from:
a. Peduncle
b. Cotyledon
c. Outer integument
d. Inner integument

Answer 1

Hint: A structure that presents in the micropylar region of Euphorbiaceae seeds is called a caruncle. The ecological function of the caruncle is to promote seed dispersal by ants. This process is called myrmecochory. However, people still get into a debate when discussing the agronomic importance consisting of it when influencing seed germination.

Complete answer:
- Caruncle is a consequence close to the hilum on the spores of a few flora of family Euphorbiaceae plants like Hevea. The outermost part of the ovule is the Outer integument.
- In the duration of the period of development of the ovule, the outer integument distinguishes into diverse layers of the seed coat. In this process Caruncle is also a resultant from the outer integument.
- The Cotyledon is said to be thin, transparent a little, and oval in the framework in castor. They have palm-shaped venation. The middle costa (also called as a rib) is also more protuberant and tolerates a few lateral veins.
- We can say that the Peduncle is a shoot-like assembly which attributes to the ovule in the formation of the placenta. The tegmen, which is the inner covering of the seed is formed by the Inner integument

Hence, the correct answer is option (C).

Note: In brief research, we can say that the Caruncle is a derivative of the integument of the embryo sac. It can be defined as an extension near the hilum on the spores of a few plants. The rate of percentage of germination gets to increase the following increments in soil moisture. However, the caruncle did not affect this process at any level of the moisture. On the other hand, in one genotype, more mass of root which was dry is produced when the caruncle is excised.