B1.5 Biomass

Question 1

What do the arrows represents in a food chain?

Answer 1

The flow of energy

Question 2

What is the producer?

Answer 2

An autotroph- makes own food through photosynthesis

- green plants and algae

Question 3

What is the primary consumer?

Answer 3

Herbivores that eat the producer

-e.g rabbits, cows, caterpillars

Question 4

What is a predator?

Answer 4

An animal that kills its food

- Secondary or tertiary consumer

Question 5

What is prey?

Answer 5

Animals that predators feed on

Question 6

What is an apex predator?

Answer 6

The predator that has no predators of its own

Question 7

What is a scavenger?

Answer 7

An organism that eats already dead animals

-e.g hyenas

Question 8

What is a decomposer?

Answer 8

An organism that eats dead or decaying organisms or the undigested plant and animal matter in faeces

Question 9

What is a trophic level?

Answer 9

A hierarchical level in the food chain

Question 10

Where does the energy from food go?

Answer 10

Faeces, urine, respiration and heat energy

Question 11

What is an anabolic reaction?

Answer 11

A reaction where your body makes something

Question 12

What is a catabolic reaction?

Answer 12

A reaction where your body breaks something down

Question 13

Is a pyramid of biomass always useful

Answer 13

Yes

Question 14

Is a pramid representing numbers always useful?

Answer 14

No

Question 15

What does a pyramid of biomass show?

Answer 15

The mass of the living material at each point during the chain

Question 16

What is the ultimate source of energy in the food cycle?

Answer 16

The sun providing heat/light energy

Question 17

How does the energy transfer change from one consumer to the next in the food chain?

Answer 17

Less energy is transferred as it is excreted, respired, used up in reactions to grow etc

Question 18

How does biomass change from one stage to the next in the food chain?

Answer 18

Biomass decreases (like energy)
In a biomass pyriamid the columns grow smaller