Question

Which one is false about monocot stem?
I. Vascular bundles is scattered, cojoint, close, surrounded by sclerenchymatous bundle sheath and cavity.
II. Hypodermis is scelerenchymatous.
III. Peripheral vascular bundles is smaller than centrally placed ones.
IV. Ground tissue is differentiated into cortex, pericycle, pith, etc.
V. Homogeneous parenchymatous ground.

• A. I, III, IV
• B. III, IV
• C. IV
• D. V

Answer 1

Answer: (C)

IV

The monocot stem shows the following characteristics:

I. Vascular bundles are scattered in the ground tissue, conjoint, collateral and they are surrounded by the sclerenchymatous layer of bundle sheath. They have a lysigenous cavity formed by the breakdown of inner protoxylem vessels and parenchyma.

II. The hypodermis is made up of sclerenchymatous cells.

III. The peripheral vascular bundles are smaller in size and are more than the central vascular bundles.

IV. Ground tissue is not differentiated into cortex, pericycle, pith etc.

V. Ground tissue is homogeneous and is made of parenchymatous cells.

Hence, the correct answer is 'Ground tissue is differentiated into cortex, pericycle, pith etc.'