Feeding relationships

Question 1

What are trophic levels?

Answer 1

Feeding relations between organisms

Question 2

How can you define a producer?

Answer 2

They produce their own organic nutrients from (usually) sunlight. You will find these at the bottom of the trophic levels and are mostly green plants.

Question 3

How can you define a primary consumer?

Answer 3

Herbivores- Eats the producers and gets eaten by the secondary consumers

Question 4

How can you define a secondary consumer?

Answer 4

Predators (Omnivores or Carnivores) that feed on primary consumers. Gets eaten by the tertiary consumers

Question 5

How can you define a tertiary consumer?

Answer 5

Predators that feed on secondary consumers. They are usually at the top of the food chain.

Question 6

How can you define a decomposer?

Answer 6

Bacteria or Fungi that get their energy off feeding on dead, dedcaying organisms and undigested waste (Faeces) . They secrete enzymes to break them down.

Question 7

How can you calculate the efficiency of biomass transfer from a lower trophic level to a higher one?

Answer 7

Precentage efficiency transfer: Biomass in higher trophic level/ Biomass in lower level X 100

Question 8

How do producers create their own biomass?

Answer 8

Producers use glucose (made during respiration) to produce their own biomass

Question 9

How does a primary consumer eating a producer increase its biomass?

Answer 9

They break down the biomass of the consumer through digestion and use the chemical energy to increase or sustain their own biomass

Question 10

As chemical energy is transferred___________

Answer 10

Biomass is also transferred

Question 11

Approximately how much energy is transferred on to the next trophic level?

Answer 11

10%