(Section 7) Ecology

Doesn't cover the whole section, but at the same time this can't all be applied to the same chapter. (NOTE TO SELF: This is because this is what the test was on. The textbook wasn't used much in the making of these cards.)

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What do all food chains begin with? What sort of organism usually is this?
A producer which is normally a plant or algae.
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What is biomass? Why doesn't water have a biomass?
The mass of all living tissue in an organism, water is not living so has no biomass.
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What is the name for an organisms stage in a food chain? What do the arrows in a food chain represent?
Trophic level. The arrows represent the transfer if energy in a food chain, about 10% of the energy is passed through each level (so the secondary consumer will only have 1% of the producers energy, for example).
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Whay is an apex predator? What is a good example of one?
A carnivore with no predaters such as an osprey.
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What is interdependence? Predator-Prey Cycling?
Interdependence- When all organisms in a community depend on each other. P-P Cycling is the relationship between predator and prey over several years (for example, more prey, less predator, but less food so then prey numbers decrease etc).
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How do you use a quadrat? What is this method called?
Place it in a random area multiple times and count the amount of a certain organism inside of it. Find an average of the results per metre squared and multiply it by the whole area to get an estimate. This is called random sampling.
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What is sampling along a transect?
Finding the number of organisms change along a habitat. To do it you should pick a line, place the quadrat at regular intervals and repeat then calculate the average.
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What is a community? Ecosystem?
Community- A group of two or more populations of different species living in the same place at the same time. An ecosystem is a community of living organisms in their environment.
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What are abiotic factors? Examples?
The NON-living parts of the environment. Such as light intensity, water, soil pH, wind intensity and carbon dioxide levels.
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What are biotic factors? Examples?
The LIVING parts of the environment. Such as predators (like an invasive species), diseases and species competition.
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What are pyramids of numbers? Are they reliable?
Of numbers- a pyramid showing the numbers of a species in an environment. They can be unreliable as there may only be one huge oak tree and 200 worms, and that is not shown.
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What are pyramids of biomass? Are they reliable?
Of biomass- Shows the toal biomass of all the organisms. They are reliable because they are representative of the size and scale of species and the pyramids have a more normal pyramid shape.
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Other cards in this set

Card 2

Front

What is biomass? Why doesn't water have a biomass?

Back

The mass of all living tissue in an organism, water is not living so has no biomass.

Card 3

Front

What is the name for an organisms stage in a food chain? What do the arrows in a food chain represent?

Back

Preview of the front of card 3

Card 4

Front

Whay is an apex predator? What is a good example of one?

Back

Preview of the front of card 4

Card 5

Front

What is interdependence? Predator-Prey Cycling?

Back

Preview of the front of card 5
View more cards

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