Ecologie: samenleven

• Biologie
• Middelbare school
• havo
• Leerjaar 3

Symbiosis

At the end of the lesson...

• you can explain the term biological equilibrium 

• you can explain three types of symbiotic relationships

Cooperation

Competition

Plaatje biologisch evenwicht

even checken bij Leon voor online methode

Population size

Is determined by biotic and abiotic factors

If factors change, population size changes

When there is no change, the population is in equilibrium

Relations within species

- Hierarchy
- Territorial
- Pair bonding

Relations between species:
Symbiosis

- mutualism

-commensalism

-parasitism

Mutualism +/+

clownfish and anemoon

Commensalism +/0

walvis en zeepokken

Parasitisme +/-

ant and cordyceps fungus

tick and dog

Please explain...

• what a biological equilibrium is

• three kinds of symbiosis

off to work 

6.2 and 6.3

do ex 1 to 7