Lesson 2.2 - The organs of plants

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Even plants have organs, too!

Today's lesson 

1. HW Review

2. Roots

3. Root system

4. Stems

5. Leaves

6. Vascular system

HW

HW Review

spinal column

ribs

lungs

heart

spinal column

kidneys

oesophagus

stomach

liver

spinal column

large intestines

aorta

vena cava

small intestines

Can you recall the Dutch names for these plant parts?

Organs of plants

1. Roots

2. Stems

3. Leaves

Roots

• What is a root?
• How is it an organ?

Stems

Function of stems: 

- Support the flowers, leaves & fruit. 

- Keep the plant upright. 

- Store extra food. 

- Transport water, minerals & food through the plant. 

2 types of stems: 

- WOODY STEMS (trees & bushes) 

- HERBACEOUS STEMS (little herby plants)

Leaves

• Make food = photosynthesis
• Photosynthesis > in all green parts of a plant
• Photo = Light
• Synthesis = to make

Organ system of a plant

1. Root system - wortelstelsel

2. Vascular system - transportstelsel 

A root system

Function

1. Taking up water and minerals from the soil.

2. Keeping the plant in the ground.

3. Storing food reserves.

Vascular system

All the vessels of a plant taken together

Function:  transport

1. water and minerals from the roots
   to other parts of the plant
2. glucose from the leaves
   to the other parts of the plant

TO DO

Read 2.2 

Do Qs 1, 2 and 5