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Flashcards in Pyramids of Biomass Deck (23)
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1

The 'stuff' that makes up a living organism is called...

biomass

2

What else can biomass be referred to as?

  • Carbon compounds
  • Chemical energy
  • Glucose
  • Carbohydrates

3

What is respiration?

The chemical reaction that releases energy from glucose

4

What is photosynthesis?

The chemical reaction that creates glucose from carbon dioxide, water and sunlight.

5

What is the equaiton for respiration?

Glucose + Oxygen --> Carbon Dioxide + Water + ENERGY

6

What is the equation for photosynthesis?

Carbon Dioxide + Water ---sunlight---> Glucose + Oxygen

7

Plants turn light energy into...

chemical energy (biomass)

8

Where do plants get their energy from?

sunlight

9

What is at the eginning of every food chain?

A plant

10

The plant at the beginning of a food chain is called the...

producer

11

The animal in a food chain that eats a producer is called the...

primary consumer

12

The animal in a food chain that eats the primary consumer is called the...

secondary consumer

13

The animal is a food chain that eats the secondary consumer is called the...

teriary consumer

14

What do the arrows in a food chain represent?

The direct that chemical energy is moving

15

Only 10% of the chemical energy eaten by an animal in a food chain becomes biomass. What happens to the other 90%?

It is lost as:

  • Movement
  • Waste (faeces and urine)
  • Generating heat
  • Respiration

16

What happens to the amount of biomass as you move up through a food chain?

The amount of biomass becomes less and less.

17

Draw a pyramid of biomass for the following food chain:

Dandelion --> Rabbit --> Fox

18

Which organism in a food chain always contains the most biomass?

The producer (plant)

19

Which organism always goes at the bottom of a pyramid of biomass?

The proucer (plant)

20

Algae is a...

Plant

21

What would happen if all the producers in a food chain died?

The animals would all die as energy enters a food chain via light energy from the Sun.

22

What does each 'bar' on a pyramid of biomass represent?

How much all of the organisms that the bar represents would weigh if you put them together.

23

Why do the bars of the pyramid become shorter as you move up?

Because energy and biomass are being lost as you move up the food chain as:

Movement

Generating heat

Waste (faeces + urine)

Respiration