Write the function of

a. Sieve tube

b. Interfasicular cambium

c. Collenchyma

d. Aerenchyma

The respective functions are as follows:

a. Sieve tube – They help in translocation of synthesized food throughout the plant. It is present in phloem tissue.

b. Interfasicular cambium – It facilitates secondary growth in dicot stem and root and also helps in formation of vascular cambium. It is a kind of secondary meristematic tissue present in between two vascular bundles.

c. Collenchyma – It provides mechanical support to young stem. Its cells have angular thickening at corners.

d. Aerenchyma – It provides buoyancy to floating plants. It is a specialized parenchyma having large air spaces.