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OALH Pyramids of Biomass (year 7)

Last updated over 4 years ago
18 questions
Do Now
1

What is the name for an organism that makes its own food?

1

What is the name for an organism that hunts other organisms?

1

Describe the motion of a streamlined object

1

Name the equipment needed for chromatography

1

Calculate the rf value of an ink dot that moved 2cm when the solvent moved 10 cm
(Rf= distance solute travelled / distance solvent travelled)

1

Challenge: Name the kingdom this organism belongs too ‘Single celled organisms with no nucleus (e.g. bacteria).’

Key Knowedge
1

State the definition of Biomass.

1

Biomass can be lost due to:

1

Suggest two reasons why biomass is lost from a food chain

Recall Quiz:
1

Biomass can be lost due to:

1

State the definition of Biomass

1

Suggest two reasons why biomass is lost from a food chain

I Do
1

Grass -> rabbits -> snakes -> hawk
100 pieces of grass (0.1kg)
10 rabbits (0.5kg)
3 snakes (1kg)
1 hawk (1kg)

1

Algae -> Krill -> Salmon -> Shark
32 pieces of Algae (0.5kg)
110 Krill (0.1kg)
7 Salmon (1kg)
1 Shark (5kg

Plenary
1

Write a food chain for the following organisms: Grass, fox, rabbit

1

Make 2 food chains from the food web on the powerpoint:

1

Explain what would happen to the number of clown fish if the zooplankton were wiped out by a disease

1

Draw a pyramid of biomass for the following:
Dandelions x 10 (15kg each)
Rabbits x 5 (9kg each)
Fox x 1(3kg each)