Food Chains

Question 1

Importance of producers

Answer 1

• synthesise complex molecules
• source of all the biomass in a community

Question 2

What are primary consumers

Answer 2

• organisms that eat the producers

Question 3

What’s a tertiary consumers

Answer 3

• Eats secondary consumer

Question 4

Define predators

Answer 4

Consumers that kill or eat other animals

Question 5

What’s a stable community

Answer 5

One where all biotic and abiotic factors are in balance

Question 6

Two types of sampling

Answer 6

• random
• sampling along a transect

Question 7

Describe random sampling

Answer 7

• used to compare number of different organisms in different areas
  = use a quadrat
  = place quadrat on ground and count number of organisms inside the quadrat

Question 8

Why would we use sampling along a transect

Answer 8

To investigate whether number of species change as we move across a habitat

Question 9

What’s a transect

Answer 9

A line such as a tape measure or a piece of rope

Question 10

Describe sampling along a transect

Answer 10

• place transect so it runs across habitat we’re looking at
• use a quadrat to count number of organisms at intervals on the transect

Question 11

How do microorganisms recycle materials

Answer 11

Microorganisms decay
= releases minerals
Microorganisms respire
= release co2

Question 12

How do producers work

Answer 12

Always photosynthetic organisms
Through photosynthesis they make glucose
Glucose used to make other biological molecules in plant which make up the biomass