Question

Differentiation between dicot nad monocot stem brainly.In

Answer 1

Answer:

first is dicot stem

second is monocot stem

• The dicot stem is solid in most of the cases.

The monocot stem is usually hollow at the centre.

• The hypodermis is formed of collenchyma fibres which are often green in colour.

The hypodermis is made of sclerenchyma fibres, and they are not green.

• The internal tissues are arranged in concentric layers.

There is no concentric arrangement of tissues.

• The ground tissue is differentiated as endodermis, cortex, pericycle, medullary rays, pith, etc.

The ground tissue is the same and is composed of a mass of similar cells.

• The vascular bundles are formed as broken rings.

The vascular bundles are scattered irregularly around the ground tissue.

• Phloem parenchyma is present.

Phloem parenchyma is absent.

• Pith is well-developed.

Pith is not as well-developed in monocots

• Epidermal hair may or may not exist.

Presence of epidermal hair.

• Vascular bundles are less in number and are of uniform size.

There are numerous vascular bundles of different sizes.

• The Dicot stem does not have a bundle sheath on the outside of a vascular bundle.

The monocot stem has a sclerenchymatous bundle sheath on the outside of a vascular bundle.

• The Dicot stems have trichomes.

The monocot stems do not have trichomes.

• The vascular bundles always remain open, due to the presence of cambium within phloem and xylem.

The vascular bundles are closed.

• Dicot stem can feature secondary growth as a result of secondary vascular tissues and periderm formation.

No secondary growth is witnessed in case of monocots.

• Vessels are of a polygonal shape and are arranged in rows or chains. Vessels are rounded or oval and are arranged Y-shaped formation.

• Usually, vascular tissues stop functioning when they get old. New vascular tissues replace the old ones.

Vascular tissues remain the same throughout the plant’s life cycle.