Question

Question 4
Why is the transport of materials necessary in a plant or in an animal? Explain.

Answer 1

Transport of materials is necessary in both plants and animals as every cell needs regular supply of nutrients and oxygen for releasing energy through respiration.
The food that we eat is broken down into smaller components to be absorbed by cells. The oxygen we inhale also has to be transported to all the cells of the body. Our body also requires constant removal of waste materials such as carbon dioxide.
For the transport of all these materials (nutrients, oxygen and waste products) our body has a specialised transport system called the circulatory system.
Similarly, in plants, the transport of water and food is accomplished with help of vascular tissues (xylem and the phloem).