Chapter 7 : Micro-organsims in the environment Flashcards
Micro-organisms. Food chains and webs. Micro-organisms and decay. Micro-organisms in food webs
What are micro-organisms?
A micro-organism is a living thing that is so small, you can’t see it with the naked eye
What are the 3 main types of micro-organisms?
- Bacteria
- Fungi
- Viruses
Give an example of bacteria
E.Coli
What are pathogens?
Pathogens are bad, disease-causing micro-organisms
Give two examples of fungi
Yeast, Mushrooms
Give two examples of viruses
Coronavirus, Ebola
Would there be more micro-organisms in a tropical rainforest or a cold woodland? Explain your answer.
In a tropical rainforest. This is because micro-organisms grow faster in warm, wet conditions.
What are the disadvantages of decay by micro-organisms.
When food decays, it cannot be eaten and must be thrown out.
What are the advantages of decay by micro-organisms?
It gets rid of dead animal carcasses, leaves, wood and feces.
What is the main source of energy in a food chain?
The sun
What is a producer?
A producer is an organism that produces it’s own food.
What is a consumer?
A consumer is an organism that is unable to produce it’s own food.
What do the arrows mean in a food chain?
Energy transferred to
