Characteristics of root

Biology Doubts

Types of root system

On the basis of place of origin, there are two types of root system. All Biology Doubts are explained by academic team of Physics Wallah

(i) Tap root system or normal root system

  • Tap root develops from radicle
  • The primary tap root grows and gives rise to secondary and tertiary roots forming tap root system.
  • They are deep feeders
  • g. Dicot

(ii) Adventitious root system

  • They develop from any part of the plant body except radicle of seed.
  • They may arise from nodes, internodes, base of stem and leaves
  • They are usually shallow surface feeders.
  • g. Monocot

Modifications of tap root

To perform functions other than normal i.e., assimilation, storage of food etc., tap root gets modified into following types:

(i) Fusiform

Spindle shaped i.e. root becomes thicker in the middle and tapering on both ends e.g. Radish (Raphanus sativus).

(ii) Conical

Cone like i.e. broad at the base and gradually tapers towards the apex. e.g. Carrot (Daucus carota).

 (iii) Napiform

It is swollen at the base and tapers abruptly in the apical region. e.g. Turnip (Brassica rapa)., Sugar beet (Beta vulgaris)

Characteristics of root

Characteristics of root

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