6.2 Roots 1HVTTO

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

6.2 Roots

• Jacket in your locker
• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor
  
• Read pages 151-152

Lessongoals

• Understand: I can describe the functions of roots by giving examples of what each function does for the plant.
  
• Understand: I can compare different types of root systems by naming them and describing how they look and work.

Homework 6.2

Secret Student

This lesson, I have randomly picked someone to be the secret student.

I pay special attention to:

• Your use of English
• Your participation in the lesson

At the end I will reveal the secret student, If I can give them positive feedback, they also earn 1/3 +0,5 OR +1 cm² cheat sheet.

Wheel of homework

Go to Lessonup.app and use this code

Reward

Penalty

Rewards

• +1 cm2 cheatsheet = you get to make a cheatsheet for a test. This starts being 1 by 1 cm. Everytime you earn this it gets 1 cm bigger to a max of 4 by 4 cm.
• 1/3 +0.5 = If you earn this 3 times you get to add 0,5 to one of your biology marks.
• Snitch = You can pick a classmate who also is checked for homework, you earn two V's (having 3 earns you a 1/3 +0,5)
• Too bad = You only get one V
  

penalties

• 45 min extra worktime = you need to come after school and do homework, this will last for 45 min or until the task is done
• Coloringpage = You get to pick a coloringpage, You need to color it and perform tasks that might be on it. You need to hand it in during the next lesson, If you don't you get 2 marks.
• 2/1 marks = a mark is an X, if you get 3 of these you will automaticly earn the 45 min extra worktime.
• Snitch = You can pick a classmate who also is checked for homework
• Lucky! = You don't get a penalty

How many different plant structures are recognized?

1. 3
2. 4
3. 5
4. 6

Plant structures

What does the following sentence mean?

The plant is germinating

Root systems

• Root system = all roots together
• Fibrous root system = many small roots, all sprouting from stem
• Taproot system = 1 large primary root with secondary roots

Taproots have the added benefit that they can store food.

A good example is a carrot.

!

Osmosis

• Osmosis = process in which water moves through a 

      selectively permeable membrane from a place with

      high concentration to a place with low concentration. 

• Roots use osmosis to absorb water.

• Roots have many root hairs, these increase surface 

       at which osmosis can happen

Permeable = allowing a liquid or gas to pass through

Selectively means, only allowing certain liquids or gasses trough.

High concentration = there is a lot of the substance

Low concentration = there is a low amount of the substance

Absorbed water is directly transported to the stems.

This keeps the concentration of water in the roots low.

Allowing osmosis to keep happening

!

Roots have many tiny root hairs. 

These are small extensions of cells that increase the surface of the roots.

They are very sensitive and break easily

Functions of roots

• Absorb water & minerals
• Anchoring the plant
• Storing food reserves

00:23-00:28

primary root

00:44-00:49

secondary roots with root hairs >

Skip

You can skip the parts called: The inside of a root and Plants communicate on pages 152 and 153

Secret Student

The secret student was .......

I paid special attention to:

• Your use of English
• Your participation in the lesson

If I can give them positive feedback, 

they also earn 1/3 +0,5 OR +1 cm² cheat sheet.

What you should do:6.2

• Pages 151-152
• Asgmt  11-15a, 17-18 pgs. 156-158 WB

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zs = Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

What you should do:6.2

• Pages 151-152
• Asgmt 11-15a, 17-18 pgs. 156-158 WB

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zw = Working with whispering

• Teacher is available for questions
• Only whisper with the student next to you
• Stay at your  desk

Sometimes plants die because their root hairs have been damaged.
Explain why plants can die from this

Tidy Duty

3 people each lesson

• Desks: empty and straight
• Chairs:  underneath the desks OR end of day: on the desks
• Floor: no rubbish