Stem of maize has water containing cavities in vascular bundles.

Correct Option: B

Stem of maize has water containing cavities in vascular bundles.

Smut is a disease of cereals, corn, grasses and sorghum caused by many species of fungi.

Correct Option: B

Smut is a disease of cereals, corn, grasses and sorghum caused by many species of fungi.

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by position of protoxylem. In dicot root the protoxylem is located near the periphery of the vascular cylinder while in dicot stem the protoxylem is located near the centre of vascular bundle i.e. the xylem is endarch.

Correct Option: C

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by position of protoxylem. In dicot root the protoxylem is located near the periphery of the vascular cylinder while in dicot stem the protoxylem is located near the centre of vascular bundle i.e. the xylem is endarch.

In barley stem, vascular bundles are closed and scattered. They are open only for a hours in the day time and never open at night. e.g Cereals.

Correct Option: A

In barley stem, vascular bundles are closed and scattered. They are open only for a hours in the day time and never open at night. e.g Cereals.

When xylem and phloem strands are present at different radii the vascular bundles are radial and 4 radial vascular bundles (tetrach condition) are present in dicot root. This is called tetrach conditions.

Correct Option: A

When xylem and phloem strands are present at different radii the vascular bundles are radial and 4 radial vascular bundles (tetrach condition) are present in dicot root. This is called tetrach conditions.