Question

Legume seeds exhibit dormancy because of

• A. Undeveloped embryo
• B. Hard seed coat
• C. Absence of cytokinin
• D. Absence of Gibberellic acid

Answer 1

The correct option is B Hard seed coat

Physical dormacy is caused by a hard and impermeable seed coat or fruit enclosure which prevents imbibition and sometimes also gaseous exchange. The phenomenon is sometimes referred to as 'hard seed', because the seed coats remain hard and impermeable during exposure to normal germination conditions. Physical dormacy is mostly known and described from Leguminosae, a family where the majority of the species exhibit this type of dormacy.

Thus, the correct answer is option B.