Interdependence
What do the arrows in a food chain show?
The direction of energy flow.
Name one natural hazard.
Earthquake, tsunami, forest fire.
What form of nitrogen do plants absorb?
Nitrates
What is an adaptation?
A feature of an organisms that helps its survival.
What is a learnt behaviour?
A behaviour learned from experience.
Complete this chain: Plants -> ____ -> Toads -> Foxes
Insects
Name one human activity that reduces biodiversity.
Deforestation, overfishing, use of pesticides.
What do animals use nitrogen to make?
Protein
Give an example of an adaptation and how that would help an animal to survive.
A giraffe has a long neck to help it reach the leaves at the top of trees.
What type of behaviour is shown when response reduces over time?
Habituation
What is a consumer?
An organism that cannot make its own food and eats other organisms.
Describe how one natural disaster reduces biodiversity.
Earthquakes can destroy habitats and reduce biodiversity.
Name one way to increase nitrogen in the soil.
Add a fertiliser. Organic - manure or compost. Or in-organic.
How does a pelican's beak help it feed?
Allows it to scoop fish.
It has learned that there is no danger.
Give one factor (not food) animals get from plants.
Oxygen / shelter
How does a forest fire affect biodiversity?
Forest fires reduce biodiversity by destroying habitats and food sources for different organisms.
What happens to crops if the soil lacks nitrogen?
Reduced leaf growth.
Name one type of adaptation.
Structural / behavioural / physiological / reproductive / colour
What is habituation?
A decrease in response to a repeated stimulus after the stimulus is repeated in quick succession.
In this food web: https://byjus.com/biology/overview-of-food-chain/ What would be the effects of a disease that killed a large portion of the frog population.
Population of owls, snakes and hawks would decrease, population of grasshopper would increase.
How does over fishing reduce biodiversity?
Overfishing can lead to the destruction of coral reefs as well as the catching of by-catch (other organisms) which can cause the destruction of their habitat reduce biodiversity.
What happens when fertilisers enter water?
Algal bloom -> light cant get to the plants at the bottom -> plants dies -> bacteria eat plants and dead algae and use up oxygen -> oxygen gets depleted and organisms die.
Explain how a polar bear is adapted to allow it to survive.
It has white fur for camouflage. It has sharp teeth and claws to catch its pray. It can slow down its metabolism to preserve energy.
How is learned behaviour different from innate behaviour?
Learned behaviour is gained from experience, innate behaviour is present from birth.