Biology – The Roots – Notes For W.B.C.S.

জীববিজ্ঞান – মূলগুলি – WBCS পরীক্ষার জন্য নোট ।

• Root is the most essential part of a plant that grows down to the soil and water.
• Root avoid the sunlight, as it grows down to soil and water, and absorbs mineral salt and water from the soil.
• • However, some typical roots are also aerial or aerating, that grow up above the ground or especially above the water.
  • Roots do not have leaves, buds, and nodes.

  Functions of the Roots

  • The roots absorb mineral salts and water from the soil then supply them to other parts of the plants.
  • Roots provide foundation to plants and keep them static.
  • Some roots absorb foods for the contingency period; e.g. radish, carrot, etc.

  Types of Roots

  • Primarily, roots are classified as −
    • Tap Root
    • Fibrous Root
    • Adventitious Root
    • Let’s discuss them in brief −

  Tap Root

  • There is a main root (see the image given below) that grows faster and it has many branches. Usually, it occurs in dicotyledon plants.