Question

Explain with well labelled diagram different regions of root and also explain structure of root hair?

Answer 1

The root is normally an underground piece of the plant which helps in obsession and ingestion of water.

The root with its branches is known as the root framework.

Qualities of the Root

(I) The root is the diving part of the plant pivot and is decidedly geotropic.

(ii) It is non-green or darker in shading.

(iii) The root isn't separated into hubs and internodes.

Life systems of Plant Root.

(iv) when in doubt the root does not hold up under leaves and genuine buds.

(v) Usually, the root tip is secured by a root tip.

(vi) The root bears unicellular root hairs.

(vii) Lateral roots emerge from the root which is endogenous in inception (emerges from pericycle).

Parts of the Root

From the tip of the root upwards, the accompanying parts can be followed in the root.

(I) The region of root top: The tip of the root is called calyptra or root top. It is for insurance of root tip against any damage. It is framed from meristem called calyptrogen. Pandanus is the main plant with different root tops. In the sea-going plants like Pistia, Lemma, and Eicchornia rather than root tops, they have to pull pockets for lightness. The root tops are missing in parasites and mycorrhizal roots.

(ii) A region of cell prolongation: The area of cell division lies mostly inside and halfway past the root top. This is the meristematic district of the root which creates new cells by cell division.

Parts of the Root Tip

(iii) A region of Root Hairs: This area is available over the locale of extension. In this district, the epidermal cells create numerous cylindrical, unicellular outgrowths called root hairs. This is likewise called Piliferous area. Water retention, for the most part, happens through this area. The root hairs are missing in numerous amphibian plants.

(iv) The region of Maturation: Above the root hair zone, develop area is available. This district comprises lasting cells. Parallel roots are delivered endogenously from the develop locale. Conduction of water and mineral salts happens through this locale.