B4.1.8 - Decomposers Flashcards
What do decomposers do?
Break down or decay dead organic material at a microscopic level
Break down animal waste
What are saprophytes?
Organisms that feed on dead material
What do dertrivitores do?
Speed up decomposition by shredding organic material into smaller pieces
Why are dertritivores useful for decomposition?
It creates a larger surface area for decomposers to work on
How do decomposers release nutrients?
They release enzymes which digest the dead matter and make it soluble so they can be absorbed by the fungus
Why do decomposers release nutrients?
So they can absorb the nutrients and use them for growth and energy store
How can nutrients be passed on from decomposition?
Some nutrients may go straight into the soil, and some animals may eat the decomposers to absorb their nutrients
Why can high temperatures prevent decomposition?
It will denature enzymes which are trying to decompose
Why are low temperatures not effective at decomposition?
The rate of enzyme-controlled reactions are slowed down due to the low temperature which slows decomposition
Why will decomposition not happen if there is not enough water?
Reactions within the microorganism will be slowed down or stopped without water
Why must the appropriate aerobic conditions be needed for decomposition?
Without the appropriate aerobic conditions, the microorganisms will not be able to survive to decompose
What are the ideal conditions for decomposition?
Warm temperatures, lots of oxygen and a moist environment
What is the equation for calculating rate of decay?
Rate of decay(g/day) = change in mass(g) / time(day)
