Answer the summary questions, in full sentences, in your exercise book including an explanation of why.
Put the following organisms into a food chain (don’t forget your arrows): Sheep, Fox, Grass
State whether a clown fish is a vertebrate or not and state what class it is in.
State the 7 processes done by all living things (MRS GREN).
Name the piece of equipment used to measure a force
Round this number to 2 significant figures 23.934
What do the arrows represent in a food chain?
Explain why a food chain must always start with a plant.
What does a food chain show?
What does a food web show?
If the number of prey increases, what will happen to the number of predators?
If the number of prey decreases, what will happen to the number of predators?
What does a food chain show?
What does a food web show?
If the number of prey increases, what will happen to the number of predators?
If the number of prey decreases, what will happen to the number of predators?
A) If the number of prey increases, the number of predators will
1. increase
2. decrease
3. stay the same
B) If the number of prey decreases, the number of predators will
1. increase
2. decrease
3. stay the same
C) A food chain shows
1.The different organisms that live in a habitat and what eats what.
2. The different factors that live in a habitat and what eats what
3. The different factors that live in an area and what eats what
D) A food web shows
1. The different organisms that live in a habitat and what eats what.
2. The many different, interconnected food chains in an area.
3. The number of predators in an area
Complete the sentence, explaining the knock-on effect of each change in population in the wider food web.
1) If a disease killed off almost all of the clownfish, the number of zoo plankton would…
However, the number of great white sharks in the area would… because…
Complete the sentence, explaining the knock-on effect of each change in population in the wider food web.
2) If a new predator came into the area and ate a significant number of small invertebrates, the numbers of blue regal fish would… because…
Complete the sentence, explaining the knock-on effect of each change in population in the wider food web.
3) If the number of zoo plankton fall, the number of clown fish would…
The number of blue regal would… because…
Answer the summary questions, in full sentences, in your exercise book including an explanation of why.
Using the above food web,
1. If rabbits became extinct, the number of foxes would (decrease/Increase) as there is………
2. If rabbits became extinct, the number of carrots would (decrease/Increase) due to there being …….
3.If birds became extinct, the number of rabbits would (decrease/Increase) because the foxes would ……....
4.If mice became extinct, the number of birds would (decrease/Increase) as there would be …………
1)A food web shows…
2)If there are more rabbits, the number of hawks will… because…
3)If there are fewer rabbits, the number of hawks will… because…
Challenge: I think that, if the number of hawks decreased, the number of rabbits might… because…