Question

1. Which of these does transpiration help in?

Cooling the plant body

Helping in exchange of gases

Creating a low pressure to pull up water and minerals up the stems

All of these

2. What happens to the magnetic effect on an electromagnet when the electric current is switched off?

It becomes stronger

It changes the direction

It becomes zero

It doesn't change​

Answer 1

Transpiration is the loss of water from the leaves for cooling the plant. It helps in upward movement of food and water because when the leaves lose water from their surface, it creates a pressure which pulls water and food upwards.