6.3 Stems

Lesson plan
  1. Activate prior knowledge
  2. Explanation of 6.3: stems
  3. Make exercises 
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Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 1

In deze les zitten 35 slides, met interactieve quizzen, tekstslides en 2 videos.

time-iconLesduur is: 45 min

Onderdelen in deze les

Lesson plan
  1. Activate prior knowledge
  2. Explanation of 6.3: stems
  3. Make exercises 

Slide 1 - Tekstslide

What is not a function of the roots?
A
Absorbing water
B
Transporting nutrients
C
Anchoring the plant
D
Storing food reserves

Slide 2 - Quizvraag

What part of a root takes up water?
A
All parts
B
Tap root
C
Lateral root
D
Root hair

Slide 3 - Quizvraag

Apple tree is an example of a plant with:
A
a taproot system
B
fibrous root system

Slide 4 - Quizvraag

6.3 Stems
    Aim: What is (the anatomy and) the function of stems?


Slide 5 - Tekstslide

Functions 
-Stems:
-Transport water and nutrients around the organs of a plants.
-Hold up leaves, flowers and fruit.
-Have vascular bundles  trough stems, roots and leaves.

Slide 6 - Tekstslide

Slide 7 - Tekstslide

Stems
Woody and herbaceous plants:
-Woody plants make wood in the cell wall to stay firm.

-Herbaceous plants use water in vacuoles to stay firm.

Slide 8 - Tekstslide

A daffodil is an example of a woody plant
A
true
B
not true

Slide 9 - Quizvraag


Tekst
How do herbaceous plants get their strength and stay upright?
A
from woody stems
B
from the sun
C
from the pressure of water
D
from the roots

Slide 10 - Quizvraag

Parts of a stem

-Terminal bud (eindknop)
-Lateral bud (okselknop)
-Axil (bladoksel)
-Internodes(leden)
-Nodes(knopen)


Slide 11 - Tekstslide

Stems

-Buds: 
-Every year a new part of stem(internode) grows from a bud.
-You can count internodes to learn the age of a stem.


Slide 12 - Tekstslide

Slide 13 - Tekstslide

Xylem and phloem
  • The xylem transports water and chemicals up the plant.
  • The phloem transports water and chemicals down the plant.

Slide 14 - Tekstslide

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Slide 15 - Video

Beside you can see a picture of xylem and phloem in a plant stem. What directions do they flow in?
A
Xylem goes down and phloem goes up
B
Xylem goes up and phloem goes down
C
They both flow up
D
They both flow down

Slide 16 - Quizvraag

What has happened here?

Slide 17 - Open vraag

Heartwood provides support and does not transport water
Sapwood transports water and minerals
Xylem = 'tubes' that transport water and minerals
Phloem = 'tubes' that transport sugars (glucose)

Slide 18 - Tekstslide

Annual rings
Trees:-Have annual rings (jaarringen).
-Annual rings have a light and a dark part.
Light: made in spring (early wood)
Dark: Made in summer (late wood)

Slide 19 - Tekstslide

Use this video to answer exercise 6 in Eduhint

Slide 20 - Open vraag

Read page 156 textbook or part G in Eduhint. What is the name of the structure in the stem that transports food and water?
A
the highway
B
the tube
C
the vascular bundle
D
the stem

Slide 21 - Quizvraag

Why is this color change occurring?
A
vascular bundles transport water only
B
vascular bundles transport water and dissolved substances like dye

Slide 22 - Quizvraag

The rest of the video is about transpiration throught the leaves. This will be covered in 6.4 The leaves. You can see 'stomata' on page 160.

Slide 23 - Tekstslide

Bark of a tree is made of
A
cork
B
phloem and cork
C
xylem
D
sapwood

Slide 24 - Quizvraag

The oldest annual rings of a tree are located in the center of a trunk
A
true
B
not true

Slide 25 - Quizvraag

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Slide 26 - Video

Let's focus on english vocabulary
While watching this video I would like you to write down three new english scientific words that  are new to you. Try to find the meaning by listening to the context of the video. If you are still not sure make sure to ask me for the meaning.

Slide 27 - Tekstslide

Write down the three new words and their meaning you have learned by watching this video.

Slide 28 - Open vraag

What needs to be transported in plants?
A
water
B
minerals
C
food products of photosynthesis
D
all are true

Slide 29 - Quizvraag

What does phloem transport?
A
glucose
B
water

Slide 30 - Quizvraag

Where is are the vascular bundels located in the roots?
A
in a ring towards the outside
B
in the center

Slide 31 - Quizvraag

sucrose and amino acids are products of photosynthesis

Slide 32 - Tekstslide

Transport in the xylem is
A
both ways
B
one way only (root to leave)

Slide 33 - Quizvraag

Why is this color change occurring?
A
vascular bundles transport water only
B
vascular bundles transport water and dissolved substances like dye

Slide 34 - Quizvraag

And now...
make 20 t/m 26, 28, 29
Homework is also learn: 6.1 t/m 6,3 

Slide 35 - Tekstslide