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Vocabulary
Food Chains & Webs
Energy
Community Interactions
Random
100
An environment that provides the things an organism needs to live, grow, and reproduce.
What is a habitat?
100
These organisms produce energy through photosynthesis or chemosynthesis.
What are autotrophs?
100

The maximum number of trophic levels in a food chain

What is 3 to 4?

100
A relationship between two species in which one species benefits and the other is neither helped nor harmed.
What is commensalism?
100

Beavers are this type of keystone species

What is an ecosystem engineer?

200

Secondary consumers are also _____________.

What is carnivores or omnivores?

200

plant or animal species that has a disproportionally large effect on its environment relative to its abundance

What is a keystone species?

200

energy is neither lost nor created

What is the first law of thermodynamics?

200
A relationship between two species in which one species benefits and the other is harmed.
What is parasitism?
200

Pioneer Species for secondary succession

Examples:  Purple lupine (flowers) - Mt St Helens; Aspen and lodgepole pine - boreal forests; burned areas; Jack pine - northeast US after fires

300

The role of an organism in an ecosystem

What is a niche?

300

In the Pacific, loss of otters (due to hunting by man OR whales) caused what direct effect and what indirect effect on the ecosystem?

DIRECT:  large increase in sea urchins

INDIRECT:  loss of kelp forests.

300

What is the percentage of energy LOST as it moves from producer to primary consumer to secondary consumer?

90%

300
A relationship between two species in which both species benefit.
What is mutualism?
300

What is the term for "two species cannot occupy the same niche in a habitat"

What is competitive exclusion principle?

400
An organism that breaks down wastes and dead organisms.
What is a decomposer?
400

This is a way to show how energy (or biomass or numbers) in a food web is allocated. 

What is a trophic pyramid?

[energy; biomass; numbers]

BONUS:  Which can be inverted and give an example of when?

400

When the loss of an apex carnivore indirectly impacts the abundance of the producers

What is a trophic cascade?

400
An interaction in which one organism kills another for food.
What is predation?
400

Fangs, talons, large size, gape and suck, venom

What are predator strategies
500

When a prey blends into their surroundings to avoiding being eaten.  

What is camouflage

500

Two more terms to describe primary consumers

What are heterotrophs and herbivores?

500

The process by which consumers convert plant sugars to useable energy and carbon dioxide

What is respiration?

500

Two or more organisms fighting for the same resource.

What is competition?

500

A) what do you call species that first colonize rock; B) give an example and B) explain what it does

What is A) pioneer species B) lichen and C) breaks down rock to make soil