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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A : Late wood has fewer xylary elements with narrow vessels.
Reason R : Cambium is less active in winters. In the light of the above statements, choose the correct answer from the options given below :
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
A is false but R is true.
Answers (1)
The correct option is Option 1) Both A and R are true, and R is the correct explanation of A.
Assertion A states that late wood has fewer xylary elements with narrow vessels. This statement is true. Late wood, also known as summer wood, refers to the portion of a tree ring that is formed later in the growing season. It tends to have a higher density and a darker color compared to early wood. Late wood is characterized by having fewer xylary elements, such as tracheids or vessels, and narrower vessels compared to early wood.
Reason R states that cambium is less active in winters. This statement is also true. Cambium is a layer of cells in the stem or root of a plant that is responsible for secondary growth. During the winter season, cambium activity is reduced or even dormant due to environmental factors such as cold temperatures and shorter days. This reduced cambium activity during winter contributes to the formation of late wood with fewer xylary elements and narrow vessels.
Therefore, both Assertion A and Reason R are true, and Reason R provides a correct explanation for Assertion A. Hence, Option 1) is the correct answer.
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