Question

What is the need of special tissues or organs for transport of substances in plants and animals?

Answer 1

Organisms like plants and animals need special tissues and organs for the transport of substances because tissues and organs can easily transport essential substances like food, oxygen, and water from one part of the body to another.  For example, the xylem tissues of roots, stems, and leaves are interconnected and form a continuous network of channels to transport water to all parts of the plant body.