13.1 food chains & energy transfer Flashcards
1
Q
what is the ultimate source of energy?
A
sunlight
2
Q
how do plants synthesise organic compunds?
A
by photosynthesis with CO2 in air / water
3
Q
what are producers?
A
photosynthetic organisms that manufacture organic substances with light, water, CO2 & mineral ions
4
Q
what are consumers?
A
organisms that obtain their energy by consuming other organisms
5
Q
what are saprobionts?
A
organisms that break down complex materials in dead organisms & release minerals & elements
6
Q
what is biomass?
A
total mass of living material in a specific area at a given time
