1. SCIENCE – FORM TWOSCIENCE – FORM TWO
FOOD WEBs & FOOD CHAINsFOOD WEBs & FOOD CHAINs
Created by: Alison OngCreated by: Alison Ong
EVALUATIONEVALUATIONACTIVITIESACTIVITIESVIDEOVIDEOCONTENTSCONTENTS

2. WHAT IS A FOOD CHAIN ?WHAT IS A FOOD CHAIN ?

3.  A shows how each livingA shows how each living
thing gets its food. Some animals eatthing gets its food. Some animals eat
plants and some animals eat otherplants and some animals eat other
animals.animals.

4. EXAMPLE OF A FOOD CHAINEXAMPLE OF A FOOD CHAIN

5. Food WebFood Web
 AA food webfood web is a model that shows all the possibleis a model that shows all the possible
feeding relationships between organisms living infeeding relationships between organisms living in
an ecosystem.an ecosystem.

6. What are the differencesWhat are the differences
between food webs andbetween food webs and
food chains?food chains?

7. A food web is actually several food
chains joined together.

9. How many food chains can you
make from this food web?

10. WHAT IS IN A FOOD CHAINWHAT IS IN A FOOD CHAIN
??
PRODUCERSPRODUCERS
CONSUMERSCONSUMERS
DECOMPOSERSDECOMPOSERS

11. ProducersProducers
 Plants get their energy from the sun.Plants get their energy from the sun.
They areThey are producersproducers because theybecause they
make their own food using energymake their own food using energy
from the sun.from the sun.

12. CONSUMERSCONSUMERS
Consumers hunt, gather, andConsumers hunt, gather, and
store food because they cannotstore food because they cannot
make their own.make their own.

13. Three Types ofThree Types of
ConsumersConsumers
OmnivoresOmnivores
Herbivores
CarnivoresCarnivores

15. HerbivoresHerbivores
A herbivore is an animal that gets itsA herbivore is an animal that gets its
energy from eating plants.energy from eating plants.
Large
Herbivores Medium-sized Herbivores Small Herbivores

17. CarnivoreCarnivore
A carnivore is an animal that gets foodA carnivore is an animal that gets food
from killing and eating other animals.from killing and eating other animals.
Large Carnivores Medium Carnivores Small Carnivores

19. OmnivoreOmnivore
An omnivore is a kind of animal thatAn omnivore is a kind of animal that
either eats other animals or plants.either eats other animals or plants.
Large Omnivores

20. Medium-sized Omnivores
Small Omnivores

22. Decomposers andDecomposers and
scavengersscavengers
ScavengersScavengers
DecomposersDecomposers

23. Let’s Look at a FoodLet’s Look at a Food
ChainChain

24. A food chain is a simplifiedA food chain is a simplified
way to look at the energy thatway to look at the energy that
passes from producers topasses from producers to
consumers.consumers.