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Information from Food Webs

In this worksheet, food webs and food chains give us information about the characteristics of organisms and the energy transfers that take place.

'Information from Food Webs' worksheet

Key stage:  KS 3

Curriculum topic:  Biology: Interactions and Interdependencies

Curriculum subtopic:  Relationships in an Ecosystem

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

A food web or food chain gives us information about what organisms eat. Animals that hunt and eat other animals are predators, whereas prey is the animal that gets eaten. Predators have adaptations that allow them to catch their prey, whereas the prey has adaptations to avoid being eaten.

Have a look at the following pictures of animals. Can you tell whether they are a predator or a prey?

 

Both predators and prey have good eyesight and have such a colour so they blend in with the background environment; we say, they camouflage. Predators have forward facing eyes, while prey animals have eyes that allow them to look around them. Predators have hooked beaks or sharp teeth and claws and extreme speed. Prey animals have speed as well, so they can run away and large ears to listen for danger.

Birds have different types of beaks depending on what they eat. Long beaks allow search for shellfish in the sand. Flat beaks help sift out weed and small snails from water. Short, pointed beaks help to catch insects in the air and thick, strong beaks help to crash seeds.

Some organisms are decomposers, because they feed on dead plants and animals.

Have a look at this food chain:

grass → oryx → lion

 

The three organisms make three different energy levels; they are called trophic levels. Very little energy passes from one level to another. Only 10% of the energy the grass provides actually passes to the oryx when it eats the grass, and much less passes to the lion.

What is a predator?

animals that hunt other animals to eat

animals that are eaten

What are prey animals?

animals that hunt other animals to eat

animals that are eaten

Describe the eye position of prey animals.

at the front of the head

on the side of the head

Where do predators have eyes?

at the front of the head

on the side of their head

Why do animals have the specific colours they have?

to stand out from the crowd

to camouflage

What do predators need to grab their prey and rip its flesh?

sharp eyesight

sharp claws and teeth or hooked beak

long legs

What type of beak would you need to catch insects in the air?

long

strong and thick

short and pointed

What do we call organisms that feed on dead plants or animals?

How do we call the different energy levels in a food chain?

feeding levels

trophic levels

triffle levels

How much of the energy passes from the plant to the herbivore that eats it in a food chain?

0.1%

1%

10%

  • Question 1

What is a predator?

CORRECT ANSWER
animals that hunt other animals to eat
EDDIE SAYS
Predators hunt other animals to eat.
  • Question 2

What are prey animals?

CORRECT ANSWER
animals that are eaten
EDDIE SAYS
Prey animals are eaten by others.
  • Question 3

Describe the eye position of prey animals.

CORRECT ANSWER
on the side of the head
EDDIE SAYS
Prey animals need to be able to see around them so they have eyes on the side of the head.
  • Question 4

Where do predators have eyes?

CORRECT ANSWER
at the front of the head
EDDIE SAYS
Predators have forward-facing eyes, because they have to spot prey.
  • Question 5

Why do animals have the specific colours they have?

CORRECT ANSWER
to camouflage
EDDIE SAYS
Animals need to be able to blend into their environment for camouflage.
  • Question 6

What do predators need to grab their prey and rip its flesh?

CORRECT ANSWER
sharp claws and teeth or hooked beak
EDDIE SAYS
Predators have sharp claws and teeth or hooked beaks to grab and rip their prey.
  • Question 7

What type of beak would you need to catch insects in the air?

CORRECT ANSWER
short and pointed
EDDIE SAYS
Short and pointed beaks are needed to catch insects in the air.
  • Question 8

What do we call organisms that feed on dead plants or animals?

CORRECT ANSWER
decomposers
EDDIE SAYS
Decomposers feed on dead plants or animals.
  • Question 9

How do we call the different energy levels in a food chain?

CORRECT ANSWER
trophic levels
EDDIE SAYS
The different energy levels in a food chain are called trophic levels.
  • Question 10

How much of the energy passes from the plant to the herbivore that eats it in a food chain?

CORRECT ANSWER
10%
EDDIE SAYS
10% of the energy from a plant passes to the next trophic level.
---- OR ----

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