Food Chains
A food chain is a diagram that shows how organisms get energy
What is a food chain?
Interdependence is the way that living organisms depend on each other for survival, reproduction and growth.
Define interdependence.
A niche is a particular place or role that an organism has within an ecosystem.
Define a niche.
Adaptation is the special features that organisms have that help them survive.
Define adaptation.
Animals that eat plants exclusively are herbivores, and animals that eat only meat are carnivores. Animals that eat both are omnivores.
What is the difference between herbivores and carnivores.
A producer is an organism that makes its own food, a consumer is an organism that eats other animals or plants.
What is the difference between a producer and a consumer?
food, water space and mates (to reproduce).
What are the four resources that animals compete for?
Hibernation - animals like bears find a warm place to sleep through winter.
Migration - animals like birds move somewhere warmer or somewhere with more food.
Grow thicker fur - animals like sheep are kept warm by their thick coats.
Name three ways that animals adapt to the winter?
A predator is an animal that eats other animals. The animals that predators eat are called prey. Predators are found at the top of a food chain.
What is the difference between a predator and a prey?
If the producer population decreased, then the consumer population would also decrease as they have lost their food source.
What happens to the consumer population if the population of the producer decreases?
light, water, space and minerals.
What are the four resources that plants compete for?
Dinosaurs, dodo birds, wooly mammoth, sabre-toothed tiger.
What are some organisms that have become extinct?
A food chain shows how organisms get energy. When all food chains in an ecosystem are joined up they are called food webs. They show how organisms in different food chains interact.
How does a food web differ from a food chain?
A habitat is the area in the ecosystem where an organism lives.
Define habitat.
when there are no more individuals of a specific species left anywhere in the world. When a species goes extinct they are gone forever and no new organisms can be created.
Define extinction.
store genetic samples from different species so that in the future they can be used for research or to produce new individuals of that species.
What is the purpose of a gene bank?
Population is the number of organisms of the same type that live in the same area.
What does the word population mean?
An ecosystem is the name given to plants and animals that are found in a particular location.
Define ecosystem.
Changes to the organism's environment.
Destruction of habitats.
Outbreak of disease.
Introduction of a new predator or competitor.
What are some causes of extinction?