Question

The failure of fresh seed to germination even under favourable weather conditions is known as

• A. Secondary dormancy
• B. Primary dormancy
• C. Enforced dormancy
• D. Induced dormancy

Hint:

Fresh viable seeds failing to germinate under favourable conditions indicate primary dormancy.

Answer 1

The Correct Option is B

Concept:
Seed dormancy is the condition in which a viable seed does not germinate even when environmental conditions are favourable.

Step 1: Understand primary dormancy.
Primary dormancy is present in freshly harvested seeds. It is caused by internal factors such as immature embryo, hard seed coat, or chemical inhibitors.

Step 2: Interpret the question.
The question says fresh seed fails to germinate even under favourable conditions. This is the definition of: \[ \text{Primary dormancy} \]

Step 3: Eliminate other options.
Secondary dormancy develops after seed dispersal due to unfavourable conditions.
Enforced dormancy is due to external unfavourable conditions.
Induced dormancy is caused by later environmental influences. \[ \therefore \text{Correct Answer is (B)} \]