Share Week 10 - Ecology (Grade 7-Science)
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A sequence of transfers of matter and energy in the form of food from organism to organism
food chain
A graphical representation showing the relationship between different organisms in an ecosystem.
Ecological pyramids
Occurs between different species.
Interspecific
Occurs between individuals of the same species.
Intraspecific
A struggle between two organisms for the same resources within an environment.
Competition
Any type of a close and long-term biological interaction between two different organisms.
Symbiosis
An interaction where one animal catches and eats another animal.
Predator-prey
What show which organisms eat other organisms
Food chain
What do we call the levels in a food chain
trophic level
List the names for the different trophic levels?
Producer -> Primary consumer-> Secondary consumer->Tertiary consumer
List 3 types of ecological pyramids
pyramids of numbers, biomass, and energy
What kind of pyramid shows the number of organism in each trophic level.
pyramid of number
pyramid shows the amount of useful energy that enters each trophic level.
An energy pyramid
Why is energy lost in each trophic level?
Movement• Respiration• Heat loss• Growth• Excretion• Not all material consumed• Not all material digested
What kind of pyramid shows the total dry mass of the organisms at each trophic level.
Pyramid of Biomass
In ecology, the effect that a pair of organisms have on each other is called.....
interaction
