why do plant need a transport system?
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Answer:
plats need vascular bundle for transport the food, minerals and water. When water minerals are absorbed by the root, then this cannot be direct reach to the upper part of the plant. So xylem tissue takes them and transport it to the upper part of the plat like shoot stem mainly for preparing food by photosynthesis. If roots do work of absorption of water and minerals then it also needs energy. For example if wo do any work then we need energy to do work. it is the same with the roots. They needs their food for energy. When leaves do photosynthesisphotosynthesis and form food, the this cannot directly get by the roots. So problem is used for transpoting the food from leaves to root. Hence plat need system this transpoting system because they are Thallophytes