Question

Read the assertion and reason carefully to mark the correct option in question.

Assertion: When the veins run parallel to each other within a lamina, the venation is termed as parallel which is the characteristic of most monocotyledons.

Reason: When the veinlet form a network, the venation is termed as reticulate which is generally found in dicotyledons.

• A. If both assertion and reason are false.
  
• B. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are true but reason is not the correct explanation of the assertion.

Answer 1

The correct option is D If both assertion and reason are true but reason is not the correct explanation of the assertion.

$\text{Conclusion}$

Assertion: When the veins run parallel to each other within a lamina, the venation is termed as parallel which is the characteristic of most monocotyledons.

Elaboration: The arrangement of veins on the lamina is known as venation. Monocotyledonous plants exhibit parallel venation, where the veins are arranged parallelly along the lamina. Hence, the assertion statement is correct.


$\text{Reason:}$ When the veinlet form a network, the venation is termed as reticulate which is generally found in dicotyledons.

$\text{Elaboration:}$ In dicotyledonous plants, reticulate venation is observed which is characterised by the formation of irregular network or mesh-like arrangement between the veinlet, the veins emerge from the midrib at an angle.

Hence, the reason statement is correct, however, not the correct justification of the assertion.

$\text{Final answer}$

(b) If both assertion and reason are true but reason is not a correct explanation of the assertion.