B1.5 Energy and Biomass in food chains Flashcards Preview

Biology: B1 > B1.5 Energy and Biomass in food chains > Flashcards

Flashcards in B1.5 Energy and Biomass in food chains Deck (12)
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1
Q

What is the source of most energy?

A

Radiation from the sun

2
Q

What absorbs energy from the sun?

A

Green plants and algae

3
Q

What transfer of energy occurs in photosynthesis?

A

Light energy to chemical energy

4
Q

The mass of living material at each stage in a food chain is…

A

Less than it was at the previous stage

5
Q

How can biomass stages in a food chain be shown?

A

As a pyramid of biomass

6
Q

Why is the amount of material and energy contained in the biomass of organisms reduced at each successive stage in a food chain?

A

Some materials and energy are always lost in the organism’s waste materials, through movement, as heat, some material which makes up the plants/animals is inedible etc

7
Q

What does the biggest bar on a pyramid of biomass represent?

A

The producer

8
Q

What is the bar after the producer?

A

The primary consumer

9
Q

What is the bar after the primary consumer?

A

The secondary consumer and etc

10
Q

What does respiration supply?

A

Energy for all life processes including movements

11
Q

What is most energy lost to the surroundings as?

A

Heat

12
Q

Why is each level of biomass smaller than the one previous?

A

Energy is lost throughout the food chain