MC1
In the western United States, at the southern edge of their range, moose are sometimes so severely infested with ticks that they die. The tick/moose relationship is best described as
A. symbiotic.
B. mutualistic.
C. predatory.
D. parasitic.
D. parasitic.
Any being that uses the sun’s energy to create sugars is a
A. primary producer.
B. primary consumer.
C. secondary consumer.
D. secondary producer.
A. primary producer.
An organism that feeds on other organisms.
Consumer
An organism that eats other animals.
It is a collection of food chains. It is a complex diagram.
Food web
The first level of all food pyramids
A. is photosynthesis.
B. is chemosynthesis.
C. consists of primary producers.
D. consists of primary consumers.
C. consists of primary producers.
In a food web that consists of grass, mice, deer, coyotes, and hawks, which species is likely to have the greatest biomass?
A. coyotes
B. hawks
C. mice
D. grass
D. grass
The process by which glucose and oxygen is converted into energy.
Cellular Respiration
An organism that eats plants.
Herbivore
A species that serves as a lynchpin in an ecosystem.
Keystone species
____________________ is a close, long-term association between two organisms.
A. Photosynthesis
B. Predation
C. Symbiosis
D. Parasitism
C. Symbiosis
A beehive depends on pollen from flowers to survive. Flowers depend on bees to pollinate them.
Humans tend bee hives, offering the bees a place to live in exchange for some of their honey. The
relationship among these three sets of organisms is
A. mutualistic.
B. parasitic.
C. symbiotic.
D. commensalist.
A. mutualistic.
The process by which sun’s energy in converted in chemical energy.
Photosynthesis
An organism that eats other animals and plants.
Omnivore
It is a simple representation of the energy flow in an ecosystem.
Food chain
The ultimate source of energy in an ecosystem in which deer eat grass and coyotes eat deer is
A. the deer.
B. chemosynthesis.
C. the grass.
D. the sun.
D. the sun.
The ability to perform photosynthesis or chemosynthesis defines a ____________________.
A. Herbivore
B. Producer
C. Consumer
D. Carnivore
B. Producer
The process by which producers create energy in the absence of sunlight.
Chemosynthesis
The feeding level of an organism.
Trophic level
The amount of living matter in an area of Earth.
Biomass
Humans are generally
A. detrivores.
B. omnivores.
C. herbivores.
D. carnivores.
B. omnivores.
It creates energy directly from the sun.
Primary producer
Organisms that break down organic matter.
Decomposer
Organisms that feed on dead or freshly dead organisms.
Detritivore