Biology B1 Biomass

Question 1

What is the source of energy for most communities of living organisms?

Answer 1

Radiation from the Sun

Question 2

What do green plants + algae do with sunlight/

Answer 2

Absorb small amount of sunlight reaches them

Light energy transferred into chemical energy during photosynthesis

stored in substances
made up of cells

Question 3

Compare biomass of each stage of food chain to the previous stage

Answer 3

Mass of living things
each food chain
less
it was at previous stage

Question 4

Amounts of material + energy contained in biomass of organisms is reduced at each successive stage in food chain because

Answer 4

some materials + energy
organisms’ waste materials

Respiration
Supplies all energy needed for Living processes
Movement
Much transferred to surroundings