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Q.
Death of protoplasm is a pre-requisite for a vital function like
AIPMTAIPMT 1989Anatomy of Flowering Plants
Solution:
Death of protoplasm is a pre-requisite for a vital functions like transport of sap. Xylem is a dead tissue and do not have protoplasm, xylem performs the function of transport of water or sap inside the plant from roots to leaves.