Transport in Plants

Question 1

What is transpiration?

Answer 1

The movement of water through a plant from the roots to the leaves (the transpiration stream).

Question 2

What is translocation?

Answer 2

The transportation of food substances (mainly sucrose) made in the leave to the rest of the plant for immediate use or for storage.

Question 3

What is the purpose of phloem tubes?

Answer 3

To transport food, such as dissolved sugars made by the leaves during photosynthesis, to the rest of the plant.

Question 4

What is the purpose of xylem tubes?

Answer 4

To take water and mineral ions taken in through the roots up the plant.

Question 5

Describe a phloem tube.

Answer 5

Phloem tubes are made of columns or elongated, living cells with small pores in the end walls to allow food substances to flow through.

Question 6

Describe a xylem tube.

Answer 6

Xylem tubes are made f dead cells joined end to end with no end walls between them and a hole down the middle. They’re strengthened by a material called lignin and carry water and mineral ions from the roots to the stem and the leaves.

Question 7

Which form of transportation does the phloem use?

Answer 7

Translocation.

Question 8

What form of transportation does the xylem use?

Answer 8

Transpiration.