Question

Diiference between meristematic and permanent plant tissue

Answer 1

Meristematic tissue: Meristematic tissues are the tissues which have the ability to grow by rapid division. They help in the primary growth of the plant. Increase in length and increase in diameter of the plant are brought about by these meristematic cells. Meristematic cells are living, cubical cells with a large nucleus. These cells are closely packed with no intercellular spaces. Depending on the region where the meristematic tissues are present, they are classified as apical, lateral and intercalary meristems. *Apical meristem is present at the apical or growing tips of stems and roots. Apical meristem increases the length of the plant. *Lateral meristem is present in the radial portion of the stem or root. Lateral meristem increases the girth of the plant. *Intercalary meristem occurs at the base of the leaves or at the internodes. Intercalary meristem increases the length of the internode. Old meristematic cells lose the capacity to divide and transform into permanent tissues. This process of taking up a permanent shape, size, and function is called differentiation. Permanent tissues: The cells which have lost their capacity to divide but are specified to provide strength, flexibility and elasticity to the plant. These tissues can be further classified into simple permanent, complex permanent and special tissues. *Simple permanent can be categorized into parenchyma, collenchyma and sclerenchyma based on their function. *Complex permanent tissue comprises of xylem and phloem. Xylem is useful in transport of water and soluble substances. Xylem is made up of tracheids, vessels, fibres and xylem parenchyma. Phloem is useful in transport of food molecules. Phloem comprises of sieve tubes, sieve cells, companion cells, phloem fibres and phloem parenchyma.

Answer 2

Answer

Refer to the attachment ♡~