Plant Transport - Science Learning 8

What are stomata?

Answer: Stomata (singular: stoma) are tiny pores under the leaf surface from where water is removed from the plant. About 90 percent of transpiration is carried out by stomata.

What is transpiration stream?

Answer: Xylem vessels form a series of tubes from roots to the leaves. When water is lost from the stomata, more water replaces it by entering through the roots. This flow of water is known as transpiration stream.

How does rate of transpiration vary?

Answer: The rate of transpiration can vary due to temperature, humidity, pressure and many other factors.

What plants do if water intake is less?

Answer: If water intake is short, the plants starts wilting. Wilting causes less water to be lost from the plant which eventually decreases the rate of transpiration.

What is wilting?

Answer: Wilting is a state of plant when it's leaves bend and turn yellow. The bending of leaves decreases the rate of transpiration. The yellow turning is to absorb less sunlight so that photosynthesis slows down which would eventually take less water.