Question:

Given below are two statements:
Statement (I): The non deep type is the most common primary dormancy
Statement (II): In this type of dormancy species require light or darkness to germinate or chilling stratification
In light of the above statements, choose the most appropriate answer from the options given below:

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Physiological dormancy is the most common of all five classes of seed dormancy, and non-deep physiological dormancy is its most abundant subtype.
  • Both Statement (I) and Statement (II) are true.
  • Both Statement (I) and Statement (II) are false.
  • Statement (I) is true but Statement (II) is false.
  • Statement (I) is false but Statement (II) is true.
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The Correct Option is A

Solution and Explanation



Step 1: Understanding the Concept:

Seed dormancy is a state that prevents viable seeds from germinating even when environmental conditions are favorable. Physiological dormancy is divided into non-deep, intermediate, and deep types.

Step 2: Detailed Explanation:

Statement (I) is true because non-deep physiological dormancy is indeed the most common form of primary dormancy found in seeds of gymnosperms and angiosperms.
Statement (II) is true because seeds with non-deep dormancy can be released from dormancy by short periods of chilling (moist stratification), light, or darkness.
Thus, both statements are correct.

Step 3: Final Answer:

Hence, the correct option is (A).
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