Question

The xylem fibres are classified into

• A. Protoxylem and Metaxylem
• B. Primary and Secondary fibres
• C. Fibre tracheids and Fibres
• D. Long and Short fibres

Answer 1

The correct option is C Fibre tracheids and Fibres

Xylem is a permanent tissue. It helps in the conduction of water and minerals from the soil to a different part of the body. It consists of xylem vessel, xylem tracheids, xylem parenchyma and xylem fibres.

Xylem fibres are of two types, fibres-tracheid which has bordered pits and libriform fibre which has pits with no border and a slit-like aperture on the outer face.
Thus, the correct answer is option C.