Assertion (A): In a monocot stem, the vascular bundles are scattered and each is surrounded by a sclerenchymatous bundle sheath.
Reason (R): The vascular bundles in a monocot stem are conjoint and closed, with peripheral vascular bundles generally smaller than those centrally located.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) -Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
The monocot stem has a sclerenchymatous hypodermis, a large number of scattered vascular bundles, each surrounded by a sclerenchymatous bundle sheath, and a large, conspicuous parenchymatous ground tissue . Vascular bundles are conjoint and closed. Peripheral vascular bundles are generally smaller than the centrally located ones. The phloem parenchyma is absent, and water-containing cavities are present within the vascular bundles.