Energy Transfer

Question 1

What do food chains show?

Answer 1

The transfer of energy from one organism to another.

(E.g. if a cow eats grass it will get chemical energy from the grass which it will store in its body as potential energy until it needs to use it for heat, movement etc.)

Question 2

What do arrows show

Answer 2

The flow of energy as one organism consumes another.

Arrows point towards the eater (cow) and away from the eaten ( grass)

Question 3

Make up some random food chain with four parts and if its right then well done

Answer 3

Example:

🌾 ➡️ 🦗➡️🐭➡️🦉

Question 4

What is each step in a food chain called?

Answer 4

A trophic

The sun is trophic level 0, a producer like grass is trophic level 1, a consumer like a cow is trophic level 2 etc.

Question 5

True/ false

Plants are sometimes the trophic level depending on what comes before them

Answer 5

False

They are always the first trophic level because the only thing before them is the sun but it is trophic level 0. Plants don’t eat plants so plants will only ever be the first trophic level.

Question 6

Food chains are drawn __________

Answer 6

HORIZONTALLY

Question 7

Plants are also known as ______________

Answer 7

PRODUCERS

Question 8

Animals are also known as _____________

Answer 8

CONSUMERS

They eat plants and animals (not able to make their own food)

Question 9

In a food chain there is:
▪️grass
▪️a springbok
▪️& a lion
What trophic level would each of these organisms be?

Answer 9

Grass = trophic level 1
Springbok = trophic level 2
Lion = trophic level 3

Question 10

In a food chain there is:
▪️the sun ⛅️ 
▪️carrots 🥕 
▪️rabbit 🐰 
▪️and a fox 🦊

Answer 10

The sun = trophic level 0
Carrots = trophic level 1
Rabbit = trophic level 2
Fox = trophic level 3

Question 11

What does a food web show?

Answer 11

Plants and animals connected by feeding relationships

(E.g. in a good chain only one organism consumes the previous organism, but in a food web it shows multiple consumers and consumed.)

(E.g. bear eats rabbit vs bear, hawk and jaguar can all a rabbit)

Question 12

What do good webs consist of?

Answer 12

1. Producers (needed to start a food web)
2. Consumer (optional, is not needed in a food web)
3. Decomposer (needed to end a good web)

Question 13

What do producers, consumers and decomposers do?

Answer 13

Keep an ecosystem functioning

Question 14

True/false

All mushrooms are the decomposers of the food web

Answer 14

True