BIOLOGY - pyramid of numbers
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what can the population of each organism in a food chain be shown in?
a pyramid of numbers
what are the four roles in a food chain?
a producer a primary consumer a secondary consumer a tertiary consumer
what is a producer?
a producer is an organism that makes food
what is an example of a producer?
a plant
what is a primary consumer?
primary consumers are herbivores and they eat producers
what is an example of a primary consumer?
a snail
what is a secondary consumer?
secondary consumers are both carnivores and omnivores and they eat primary consumers
what is an example of a secondary consumer?
a thrush
what is a tertiary consumer?
tertiary consumers are carnivores and are at the topmost level in a food chain they feed on secondary consumers
what is an example of a tertiary consumer?
a sparrowhawk
when is the pyramid of numbers not in the shape of a pyramid?
when the producer is a large plant (a tree) or if one of the animals is small