Plant Tissue: Definition of Plant Tissue and Type of Plant Tissue (For CBSE, ICSE, IAS, NET, NRA 2022)

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Definition of Plant Tissue

  • It is a collection of similar cells performing an organized function for the plant.
  • Each plant tissue is specialized for a unique purpose.
  • Each plant tissue can be combined with other tissues to create organs such as leaves, flowers, stems, and roots.

Types of Tissue in Plants

Meristematic Tissue

This tissue is responsible for growth in length and diameter of plants.

Apical Lateral Intercalary

Apical Meristem

It ensures growth in the length of the plants.

Lateral Meristem

It is responsible for the growth in the thickness of the plants.

Intercalary Meristem

They are capable of cell division, and they allow for rapid growth and regrowth of many monocots.

Permanent Tissue

  • These tissues have lost their ability to divide and have permanently placed at fixed positions in the plant body.
  • These a group of living or dead cells formed by meristematic tissue.
  • Cellular differentiation is the process of taking up a permanent shape, size, and a function.

Types of Permanent Tissue

Simple Permanent Tissue Complex Tissue
  • It is typically composed of living cells that are thin walled.
  • These are also unspecialized in structure, and therefore adaptable, with differentiation, to various functions.
  • A plant tissue consists of living usually elongated cells with unevenly thickened walls.
  • It acts as a support especially in areas of primary growth.
  • It is a support tissue composed of any of various kinds of hard wood cells.
  • Mature sclerenchyma cells are usually dead cells.
    • Heavily thickened secondary walls containing lignin.
  • It is one of the important tissues of the vascular system of plants.
  • Transporting minerals and water from roots and carry them to other parts of the plants.
  • It has two separate chambers.
    • Tracheids and vessels for transporting minerals and water.
Structure of Xylem
  • These tissues are tubular shaped with elongated, structures.
  • Within the sieve tubes, walls are present.
  • Phloem fiber are larger as compared to Xylem.
  • The total amount of phloem tissue is less.
Structure of Phloem


Q 1. What are the three classification of Meristematic Tissue?


Three classification of Meristematic Tissue:

i) Meristematic Tissue

ii) Lateral Meristem

iii) Intercalary Meristem

Q 2. What are the types of Permanent Tissue?


i) Simple Permanent Tissue, which can be classified as Parenchyma, Collenchyma, and Sclerenchyma.

ii) Complex Tissue, which can be classified as Xylem and Phloem.

Q 3. What is the meaning of Intercalary Meristem?


  • Intercalary Meristem is present at the internodes or the base of the leaves.
  • They are capable of cell division, and they allow for rapid growth and regrowth of many monocots.

Q 4. What are the functions of Lateral and Apical Meristem?

Answer: Lateral Meristem is responsible for the growth in the thickness of the plants. Whereas Apical Meristem ensures growth in the length of the plants.