Definition
Define organism
a living thing
What does the arrows on a food web represent
The direction of energy flow
What is always at the beginning of a food web
A producer
Give an adaptation of an animal that is a predator
Claws, sharp teeth, fast etc
What is a decomposer
an organism that feeds off dead organic matter.
define population
all organisms of a species in a defined area, at a set point in time.
What is a trophic level?
The position an organism occupies on the food chain
What is the name given to an organism that only eats plants
Herbivore
Recall an adaptation that prey species may have
camouflage, live in groups, fast, eyes at the side of head etc
Define producer
An organism that makes its own food via photosynthesis
define community
all the many populations of living things e.g., plants, animals, fungi etc in a defined area
What trophic level is a producer
The first trophic level
What is the relationship between a food chain and food web?
A food web is made up of many food chains
Define intraspecific competition and give an example
competition between members of the same species for limited resources such as two stallions fighting for access to mares.
Define Taiao
living and non-living environment
Define ecosystem
All the communities in a defined area and the environmental conditions they interact with e.g. forest
What is an apex predator
Top of the food chain, has no predators
What type of consumer eats herbivores
Secondary consumers
Define interspecific competition and give an example
When members of different fight to gain access to limited resources such as sponge and coral competing for space on the reef
Define interdependence
all living things in an ecosystem depend on each other for survival
define and give an example of an abiotic factor
the non-living part of the environment such as sunlight, temperature, water, pH, soil etc
Why is the number of trophic levels in a food web limited?
Because only 10% of energy is pass on to the next trophic level which limits the number of levels that can be sustained
What happens to an ecosystem when a keystone species goes extinct
Trophic cascade. The entire ecosystem can collapse/change due to imbalance in the food web.
Why is intraspecific competition usually more intense than interspecific competition?
Define species
a group of naturally interbreeding individuals that produce fertile offspring.