Question

Name any two tissues found in plants.

Answer 1

Plant tissues:

1. They are divided into two types:
2. Meristematic tissues: These consists of actively dividing cells and cause an increase in the length and thickness of the plant.
   1. Apical meristems are also found on the apices / growing parts of a plant like tips of shoots, roots, etc.
   2. Intercalary meristems are present at the internodes, the base of the grass, and also between leaves.
   3. Lateral meristem is responsible for increased girth and is present at the radial parts.
3. Permanent tissues: These are either dead or living cells that have lost the ability to divide. It is of two types:
   1. Simple tissues: A simple permanent tissue is defined as the tissue that consists of a single type of cells only and does not have the ability to divide. There are three types of simple permanent tissues in plants, which are as follows;
      1. Parenchyma tissue:
         1. It is made up of loosely packed cells that are cube-shaped or elongated.
         2. They possess very large vacuoles and have thin cell walls. Thus, it forms the non-woody, fleshy and flexible parts of the plant.
      2. Collenchyma tissue:
         1. They have thicker cell walls than parenchyma and do the function of providing support to the growing part of the plant.
      3. Sclerenchyma tissue:
         1. It is said to be the lignified supportive simple permanent tissue that is composed of thick-walled & dead cells as living protoplast is absent in the cells.
         2. They consist of the sclerenchyma fibers & sclereids.
   2. Complex tissues: It consists of xylem and phloem.