Transport

Question 0

What does the xylem carry

Answer 0

Water and mineral salts from the roots up the shoot to the leaves in the transpiration stream

Question 1

The main systems for plant transport are?

Answer 1

1. xylem

2. phloem

Question 2

What does the phloem transport

Answer 2

Sugars like sucrose and amino acids from the leaves (where they are produced) to the other parts of the plant

Question 3

What is the movement of food round the plant?

Answer 3

Translocation

This happens in phloem tubes

Question 4

What do root hairs do

Answer 4

1. take in water
2. they are long hairs along root branches that stick into soil
3. each root branch has millions of microscopic hairs
4. gives the plant a big surface area for absorbing water

Question 5

Why don’t unicellular organisms need transport systems

Answer 5

Because substances can diffuse directly into and out of the cell cross the membrane

Question 6

Why do multicellular organisms need transport systems

Answer 6

Because direct diffusion from the outer surface would be too slow
(As substances would have to travel long distances)

Question 7

Multicellular organisms need

Answer 7

Transport systems

Question 8

What causes transportation

Answer 8

The evaporation and diffusion of water from a plants surface

Question 9

How is water taken into the root cells

Answer 9

OSMOSIS

Higher water concentration in the soil so water is drawn into the root by osmosis