Biology : PU-CET (U.G) 2016 Panjab University Entrance Exam With Answers

Practice Mode:

56.

Presence Of Which Of The Following Is Associated With Seed Dormancy ?

A: Starch

B: Ethylene

C: IAA

D: Abscisic Acid

The answer is: D

<< Previous Question

Next Question >>

Explanation

The presence of Abscisic Acid (ABA) is associated with seed dormancy. ABA is a plant hormone that regulates many aspects of plant growth and development, including seed dormancy and germination. ABA levels increase in seeds as they mature, and high levels of ABA in seeds can induce dormancy by inhibiting germination. A decrease in ABA levels is necessary for seed germination to occur. Therefore, the balance of ABA and other hormones, such as gibberellins, is critical for the regulation of seed dormancy and germination.