Question

Assertion (A): Dicot leaf is dark green in colour on the upper surface and light green in colour on the lower surface.
Reason (R): Palisade tissue is at the abaxial side and spongy tissue is at the adaxial side in this leaf.
Identify the correct option from the following:

• A. Both (A) and (R) are correct. (R) is correct explanation for (A)
• B. Both (A) and (R) are correct. But (R) is not correct explanation for (A)
• C. (A) is true, but (R) is false
• D. (A) is false, but (R) is true

Hint:

Always double-check the positional terms: \textit{adaxial} refers to the upper surface and \textit{abaxial} to the lower surface of a leaf — easy to mix them up.

Answer 1

The Correct Option is C

Step 1: Analyze Assertion (A)
The upper surface of a dicot leaf appears dark green due to densely packed palisade tissue, while the lower surface is light green due to loosely arranged spongy tissue — so (A) is true. Step 2: Analyze Reason (R)
Palisade tissue is actually present towards the adaxial (upper) side and spongy tissue towards the abaxial (lower) side. The reason statement is reversed, so it is false. Step 3: Examine the explanation relationship
Since (A) is true and (R) is false, the correct option is (3).