Organs of plants

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

Welcome!

Questions about homework?

Discussing organs of plants (paragraph 2.2, page 94)

Making exercises 

Questions about plants

What will we be learning today?

Today we will be learning:

What organs plants have. 

What the function of those organs are. 

Plants

Plants can look very different from each other, but they often have the same organs: roots, stems, leaves and flowers. 

Roots

Roots are very important for a plants, as they can: 

- Anchor the plant in the soil

- Aborb water and mineral

- Store food

- Reproduce 

Roots

The root system consists of a few parts. The thick root that goes directly down is called the tap root. Roots that go sideways are lateral roots and they have little root hairs. 

Stems

Plants also transport a lot of substances, just like our blood does. A lot of the transportation takes place in the stems through its vascular bundles. 

Vascular bundles

Stems

Stems also make that plant sturdy. That is why some plants can get very tall! Stems can consist of wood (woody plants) or not (herbaceous plants). 

Leaves

Fotosynthesis takes place in the leaves, as it has a lot of surface and can easily exchange carbondioxide and oxygen with the air. 

Vascular system 

As mentioned, transport also takes place in plants in two different vessels:

- Water and mineral from the roots to the leaves

- Water and glucose from the leaves These vessels are often close to each other in vascular bundles.

Homework next lesson

Make all the exercises of paragraph 2.2, starting on page 98. You also need to make the plus exercise, but can skip the summary. 

Which function of the roots do you see here?

When someone puts a plant in a new pot and it only takes the tap root with it, the plant often dies. Why is that?

The transport of substances only goes from the bottom to the top.

1. True
2. False

Looking at the stem, what kind of plant is this?