6.2 Roots

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

root

stem

flower

leaf

fruit

cell wall

cell membrane

nucleus

chloroplast

cytoplasm

vacuole

mitochondria

6.2 Roots

Aim:

    What are roots and what functions do they have?
    Which types of root systems are there?

Structures of a root

What do the roots do?

• The root cap senses where there is water.
• The primary and lateral roots anchor the plant in the ground and provide support.
• The root hairs absorb the water and nutrients from the soil.

osmosis

the movement of water from one side to the other.

Water moves from the side with the most water to the side with the least water.

Inside a root

You only have to know this and the next slide:

xylem flows up. 

phloem flows down. 

You only have to know this:

xylem

transports

water up

phloem transports

water with glucose and

other substances made
by the plant

wild carrot is an example of a plant with:

1. a taproot system
2. fibrous root system

Leek is an example of a plant with:

1. a taproot system
2. a fibrous root system

grass is an example of a plant with:

1. a taproot system
2. a fibrous root system

all these plants
have a:

1. taproot system
2. fibrous root system

Review: what have I learnt?

Close your books and answer out loud (or talk to your peer/brother/sister):

    What are roots and what functions do they have?
    Which types of root systems are there?

Make: 

Learn 6.1 + 6.2 + make 11 t/m 17 (for next week)

Tomorrow you have another assignment in the lesson, don't forget to bring your (charged) iPad!