Answer :

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.



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