The abundance and distribution of organisms in an ecosystem is determined by biotic and abiotic factors. Animals and plants have adaptations to allow them to compete for resources.
What is a community?
Two or more populations of organisms
Two or more populations in their environment
All the organisms of the same or closely-related species in an area
Which of these are abiotic factors?
Light intensity and new predators
Temperature and soil pH
Food and new pathogens
Which of these are biotic factors?
Dissolved oxygen and carbon dioxide levels
Wind intensity and out-competition
Food and new predators
What do plants compete for?
Light, water and minerals and space
Light, water and minerals and mates
Light, water and minerals and territory
Which of these is a structural adaptation in plants?
Growth towards the light
Formation of poison
Which of these is a behavioural adaptation in animals?
Having sharp claws
Production of venom
What is unusual about the food chains in deep sea volcanic vents?
They have no producer
They don't start with a photosynthesising organism
The producers are not plants but algae
What is interdependence?
Humans depending upon other organisms for food
No organisms in a food web depending upon each other
All organisms in a food web depending upon each other
What trophic level in a food chain are secondary consumers?