Transportation in Animals and Plants

Why walls of veins are thinner than the walls of arteries?

Why is heart known as the pumping organ of the human body?

How do plants absorb water and minerals from soil?

Does transpiration serve any useful function in the plants? Explain.

What is the function of RBCs?

Explain stomata and its function in plants.

What is the significance of dividing heart into different chambers?

Write the two functions of kidneys.

Explain pulse and pulse rate.

What is pulse?

State one function of the following:

• Arteries
• Vein

Capillaries

What do you mean by dialysis? Explain.