Question:
Seed dormancy can be classified into categories which are
Seed dormancy can be classified into categories which are
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Remember seed dormancy types:
- Morphological: Immature embryo
- Physiological: Chemical inhibition
- Chemical: Allelopathic inhibition
- Mechanical: Hard seed coat
- Physical: Water impermeable seed coat
- Combinations: Morphophysiological dormancy (MPD)
- Morphological: Immature embryo
- Physiological: Chemical inhibition
- Chemical: Allelopathic inhibition
- Mechanical: Hard seed coat
- Physical: Water impermeable seed coat
- Combinations: Morphophysiological dormancy (MPD)
Updated On: Aug 19, 2026
- Morphological
- Morphological and physiological
- Chemical
- Mechanical
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
This question tests knowledge of seed dormancy classification.
Step 2: Detailed Explanation:
Seed dormancy is classified into two main categories:
1. Morphological dormancy:
- Embryo is immature or underdeveloped.
- Requires time for embryo development.
- Examples: Orchids, Ginkgo.
2. Physiological dormancy:
- Embryo is mature but germination is blocked by physiological mechanisms.
- Requires specific treatments (cold stratification, light, etc.).
- Subtypes:
- Non-deep: Requires stratification
- Intermediate: Requires specific conditions
- Deep: Requires specific treatments
Other types of dormancy:
- Chemical (C): Secondary metabolites inhibit germination (allelopathy).
- Mechanical (D): Seed coat is hard and prevents water absorption.
However, the primary classification is morphological and physiological.
Step 3: Final Answer:
Thus, seed dormancy is classified as morphological and physiological, which corresponds to option (B).
[0.5cm]
This question tests knowledge of seed dormancy classification.
Step 2: Detailed Explanation:
Seed dormancy is classified into two main categories:
1. Morphological dormancy:
- Embryo is immature or underdeveloped.
- Requires time for embryo development.
- Examples: Orchids, Ginkgo.
2. Physiological dormancy:
- Embryo is mature but germination is blocked by physiological mechanisms.
- Requires specific treatments (cold stratification, light, etc.).
- Subtypes:
- Non-deep: Requires stratification
- Intermediate: Requires specific conditions
- Deep: Requires specific treatments
Other types of dormancy:
- Chemical (C): Secondary metabolites inhibit germination (allelopathy).
- Mechanical (D): Seed coat is hard and prevents water absorption.
However, the primary classification is morphological and physiological.
Step 3: Final Answer:
Thus, seed dormancy is classified as morphological and physiological, which corresponds to option (B).
[0.5cm]
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