Food web vs Food chain
Which energy model typically has more organisms, a food chain or a food web?
Food web
Which trophic level is found at the base of the energy pyramid?
Producers
Most use a process called photosynthesis to create food
Do healthy ecosystems typically have high or low levels of biodiversity
High levels
Do keystone species have to be an apex predator?
No, they can be a herbivore or a producer
Which energy model shows a single pathway of energy in the ecosystem?
Food chain
In an energy pyramid, what does each trophic level feed on?
The trophic levels below it
What is another word for consumer?
Heterotroph
What biome is usually considered the most biodiverse ecosystem on Earth?
Tropical rainforests
How do beavers act as a keystone species
They transform their ecosystems, building dams creates habitat and opportunities for other organisms
All food chains should begin with what kind of organism?
Producer, plant or autotroph
A herbivore like deer belong to which trophic level?
Primary consumers
What is another word for producer?
Autotroph
What is biodiversity?
A measurement of the amount and variety of living things in a ecosystem
What is a keystone species?
A species that plays a vital role in its ecosystem, if it is removed, the food web/ecosystem may collapse or experience extreme negative effects.
Which energy model shows all of the predator and prey interactions that take place in a ecosystem?
Food web
Which trophic level would an apex predator like a shark or eagle belong to?
Tertiary consumers
How do decomposers get energy?
They break down dead or decaying organisms for food/energy.
What is a species?
A group of organisms that can breed with one another and produce fertile offspring
What will likely happen to an ecosystem or its food web if a keystone species is removed or goes extinct?
The food web/ecosystem may collapse, biodiversity will drastically decrease
In a food web, in what direction does the arrow point?
From the prey, to the predator. The arrow points in the direction of the energy transfer
When moving up the energy pyramid, energy is lost at each level in the from of heat. At the tertiary consumer level, how much available energy is left?
0.1%
What do the following consumers eat? Herbivore, Carnivore, Omnivore
Herbivore: Only plants
Carnivore: Only Animals
Omnivore: Both plants and animals
What are two ways that humans limit or hurt biodiversity on planet Earth
Over-hunting, deforestation, pollution, habitat destruction, littering....
What is 1 reason that wolves act as a keystone species in Yellowstone national park
They keep herbivore populations such as elk/deer in control.