Question

What is root modification explain the types o
f root modification Modifications of root

Answer 1

Root is an underground part of the plant that absorbs water and minerals from the soil and anchors the plant firmly.

In some plants, the roots change their shape and get modified to absorb and transport water and minerals from the soil to different parts of the plant.

Storage roots such as Carrots, Beets, and Sweet Potatoes are examples of roots that are specially modified for storage of starch and water.

I hope this will help you....

Answer 2

Modification of the roots signifies transformation in the root shape and configuration to accomplish purposes other than absorption and conduction of water and minerals. Roots are adapted to conduct specialised functions like support, storage of food and respiration.

Modifications of Tap Roots for Food Storage:

• In some plants, the roots evolve fleshy due to the absorption of food elements.

Depending upon their contours, they are classified as;

• Conical roots are broad at the base and conical at the apex, eg., carrot

• Fusiform roots protruded in the middle and tapering towards both the edges, eg., radish

• Napiform roots are rounded at the basis and taper towards the apex, eg., turnip

• Tuberous roots possess no particular shape. They emerge thick and fleshy, eg., sweet potato

Modifications of Tap Roots for respiration:

• In some halophytes that rise in swampy regions, the roots arise out of the ground and grow upwards to get oxygen for respiration.

Modifications of Tap Roots for nitrogen fixing:

• Roots of the leguminous plants are altered into root nodules which comprise nitrogen-fixing bacteria like Rhizobium. They support fixing the atmospheric nitrogen into nitrates and preparing it accessible to the plant.

Modification of adventitious roots for food storage:

• Simple Tuberous Roots are bulged and don't speculate any configuration. For eg., sweet potato

• Nodulose Roots are solitary beads. They become swollen at the top and possess an obvious structure, eg., ginger

• Fasciculated Tuberous Roots are the cluster of adventitious roots for food storehouses. They possess an obvious configuration, eg., Dahlia

• Moniliform Roots are bulged and inhibited, eg., grasses

Modification of adventitious root for support:

• Prop Roots: These roots formulate from the limbs of the tree, droop downwards, and perforate the ground thereby supporting the tree. Eg., the roots of the banyan tree.
• Stilt Roots: These roots rise obliquely from the basal node. Eg., the roots of the sugarcane.