(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.)

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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