Question

The transverse section of a plant material shows the following anatomical features:
(a) the vascular bundles are conjoint, scattered and surrounded by a sclerenchymatous bundle sheaths.
(b) phloem parenchyma is absent. What will you identify it as?

Answer 1

The monocot stem is characterised by conjoint, collateral, and closed vascular bundles, scattered in the ground tissue containing the parenchyma. Each vascular bundle is surrounded by sclerenchymatous bundle-sheath cells. Phloem parenchyma and medullary rays are absent in monocot stems.

Answer 2

(a) Monocot stem is characterized by conjoint and scattered type of vascular bundles which is surrounded by bundle sheaths.

In the stem of monocot plants, the vascular bundle present is of conjoint and of closed type. Because of this, no secondary type of growth can occur in the stems of monocot.

Also, the vascular bundles are not arranged properly but are scattered and bundle sheath made of sclerenchymatous tissue are present in them.

(b) Since phloem parenchyma is absent, so this will be identified as monocot plant.

In monocot kind of plants, we cannot find phloem parenchyma in them.