NEET BIOLOGY

Detailed explanation-1: -Oxygen and carbon dioxide are transported through tiny holes (pores) on the surface of leaves and stems through a network of air spaces within the plant to and from all living cells.

Detailed explanation-2: -Plants have two transport systems-xylem and phloem . Xylem transports water and minerals. Phloem transports sugars and amino acids dissolved in water.

Detailed explanation-3: -The xylem vessels and tracheids transport water and minerals from the roots to all parts of the plants.

Detailed explanation-4: -These include oxygen, carbon dioxide, nutrients (such as glucose and amino acids), hormones and waste chemicals such as urea. These substances are transported in a medium called blood through the body through tubes called blood vessels.

Detailed explanation-5: -Substances transported are glucose, glycerol, minerals, vitamins, fatty acids, amino acids, and hormones. Water enters the xylem to reach the leaves and is further diffused out through the process of transpiration. The movement of water is unidirectional.