Question

What is a caruncle?

Options

• An outgrowth of the funicle

• The outer layer of seed coat

• The embryonic shoot

• An aril that develops around the micropyle opening

Answer 1

A caruncle is a type of aril that develops specifically around the micropyle opening of certain seeds. The castor bean (Ricinus) is a classic example where the caruncle is a fleshy, prominent outgrowth. Caruncles often play a role in water absorption during seed germination.