Morphology Of Flowering Plants Root Stem And Leaf Question 500

Question: Read the assertion and reason carefully:

Assertion : Dorsiventral leaves are also called bifacial. Reason : They have distinct adaxial and abaxial surfaces.

Options:

A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

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

C) If the assertion is true but the reason is false

D) If both the assertion and reason are false

Show Answer

Answer:

Correct Answer: B

Solution:

The dorsiventral leaves are commonly horizontal in orientation with distinct upper and lower surfaces.

The upper surface is also called inner, adaxial or ventral surface.

The lower surface is correspondingly called outer, abaxial or dorsal surface.

A distinction with upper and lower surfaces is absent in isobilateral surface.