Bs 2 + 9 Feeding relationships

Bs 2 + 9: Feeding relationships
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BiologieMiddelbare schoolvwoLeerjaar 3

This lesson contains 10 slides, with text slides.

time-iconLesson duration is: 45 min

Items in this lesson

Bs 2 + 9: Feeding relationships

Slide 1 - Slide

Planning for today?

  • Instruction bs 2 + 9: Feeding relationships (10-15 min)
  • Start PO: Footprint challenge

Slide 2 - Slide

at the end of this class
...You can explain the difference between herbivore, omnivore and carnivore. 
...You can make a food web that show producers, consumers and decomposers.
...You can explain what heterotroph and autotroph is. 

Slide 3 - Slide

Feeding relationships
  • Herbivores (plant eaters)

  • Omnivores (eat plants + meat)

  • Carnivores (eat meat)

The animals in the picture they eat each other.. they form a food chain.

Slide 4 - Slide

Food chains and food webs
A food chain is a series of organisms in which each organism is the food source for the next.

First link = plant species. 
Second link = herbivore.
Third link = carnivore. 

Ecosystems contain multiple food chains that are interrelated. They make up a network -> food web. 

Slide 5 - Slide

Plants provide the food for other animals, they are producers (first link)

Animals eat (consume) the plants. They are consumers
Producers -> primary consumers -> secondary consumers etc. 

Not all plants and animals get eaten.. they can also simply die. Scavengers will use remains. 

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The remains left by the scavengers are broken down by fungi and bacteria -> decomposers

Decomposers convert remains into Carbon dioxide, minerals and water. These substances can be used again by plants. 
Think of photosynthesis:
Water + light + CO2 -> Glucose + O2

<- nutrient cycle. 

Slide 7 - Slide

Some organisms don't need other organisms as food. Some organisms can make their own food. We call them autotroph. Auto (=self), trophein (=feeding)

Some organisms do feed on others. We call them heterotroph. Heteros (=others), trophies (=feeding)

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PA Footprint challenge
Step 1: Read the assignment @studiewijzer
Step 2: Calculate your ecological footprint (link in the assignment)
Step 3: Discuss with a groups of 2/3 what you can do for a week to reduce your footprint

  • Challenge yourself for a week. 
  • Make a vlog or TikTok of 1-2 minutes about your challenge. 
  • Grade counts 1x

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Now get to work!
Read 6.2 + 6.9
Make the worksheet. 

Make exercise: 5,6,7,8

Slide 10 - Slide