Ecology Unit - Finals

A habitat is a place where a. An organism lives b. A role, or job, an organism has in their ecosystem c. All conditions that surround the organism d. All populations of different organisms

a. An organism lives

Organisms that only eat meat and other animals are a. Carnivores b. Detritivores c. Herbivores d. Omnivores

a. Carnivores

What is when two or more individuals, in either the same or different populations try to use the same resource? a. Competition b. Coevolution c. Ecology d. Symbiosis

a. Competition

Organisms that eat dead organic material are a. Detritivores b. Producers c. Decomposers d. Omnivores

a. Detritvores

Spider crabs live in shallow areas of the ocean floor, and greenish-brown algae lives on the crabs' backs, making the crabs blend in with their environment, and unnoticeable to predators. The algae get a good place to live, and the crab gets camouflage. This is an example of which symbiotic relationship? a. Mutualism b. Parasitism c. Commensalism d. Competition

a. Mutualism

What type of symbiotic relationship is when bacteria lives inside the large intestine of humans, ingesting the nutrients humans are unable to break down on their own? a. Mutualism b. Parasitism c. Commensalism d. Competition

a. Mutualism

What level of organization in ecology is a group of animals in the same species living together? a. Population b. Biosphere c. Community d. Ecosystem

a. Population

Which trophic level gets 100% of their energy from the sun? a. Primary producers b. Primary consumers c. Secondary consumers d. Tertiary consumers

a. Primary producers

Organisms that go through photosynthesis and make their own food are... a. Producers b. Decomposers c. Consumers d. Herbivores

a. Producers

What level of organization in ecology encompasses the entire Earth, all the ecosystems? a. Population b. Biosphere c. Community d. Ecosystem

b. Biosphere

What type of species can cause dramatic changes in an environment if the population of the species were to change? a. Pioneer species b. Keystone species c. Primary succession d. Secondary succession

b. Keystone species

The process that converts nitrogen gas to ammonia for plants to use a. Combustion b. Nitrogen Fixation c. Nitrogen Cycle d. Decomposition

b. Nitrogen Fixation

What type of symbiotic relationship is when mistletoe grows on a spruce tree and takes its water and nutrients? a. Mutualism b. Parasitism c. Commensalism d. Competition

b. Parasitism

What type of symbiotic relationship is when ticks burrow into a dog's skin, siphoning the blood of the dog, and harming the dog for the tick's own benefit? a. Mutualism b. Parasitism c. Commensalism d. Competition

b. Parasitism

Which trophic level eats the primary producers? a. Primary producers b. Primary consumers c. Secondary consumers d. Tertiary consumers

b. Primary consumers

What is the largest population an environment can support? a. Interdependence b. Biodiversity c. Carrying capacity d. Limiting factors

c. Carrying capacity

Remora fish are small fish that make their niche by picking up the scraps that sharks leave behind while feeding. The shark makes no attempt to prey on the remora fish. This is an example of which symbiotic relationship? a. Mutualism b. Parasitism c. Commensalism d. Competition

c. Commensalism

Small mites live on human skin, eating dead skin cells. The human is unaffected by these small mites. This is an example of which symbiotic relationship? a. Mutualism b. Parasitism c. Commensalism d. Competition

c. Commensalism

What level of organization in ecology is all the populations that live and interact in the same area? a. Population b. Biosphere c. Community d. Ecosystem

c. Community

Organisms that obtain energy by eating other organisms are... a. Producers b. Decomposers c. Consumers d. Ecology

c. Consumers

Organisms that get energy by breaking down and removing the stored energy from dead organisms are a. Detritivores b. Producers c. Decomposers d. Omnivores

c. Decomposers

Organisms that only eat plant life are a. Carnivores b. Detritivores c. Herbivores d. Omnivores

c. Herbivores

What is a change in assembly of a community on a newly created habitat typical in areas recently exposed to the elements? a. Pioneer species b. Keystone species c. Primary succession d. Secondary succession

c. Primary succession

One process where plants use CO2 from the atmosphere and release O2 is the basis of a. Nitrogen Cycle b. Water Cycle c. Carbon Cycle d. None of the above

c. The carbon cycle

What level of organization in ecology involves communities of organisms and the abiotic environment in which they live? a. Population b. Biosphere c. Community d. Ecosystem

d. Ecosystem

Which food chain correctly describes the flow of energy in an ecosystem? a. Leaf -> bird -> caterpillar b. Cow -> grass -> human c. Caterpillar -> leaf -> bird d. Grass -> cow -> human

d. Grass -> cow -> human

Organisms that eat both plants and animals are a. Carnivores b. Detritivores c. Herbivores d. Omnivores

d. Omnivores

What is a change in an existing community in areas where the original ecosystem has been cleared by a disturbance? a. Pioneer species b. Keystone species c. Primary succession d. Secondary succession

d. Secondary Succession

What is a close, long-term relationship between two or more species? a. Competition b. Coevolution c. Ecology d. Symbiosis

d. Symbiosis

Which trophic level receives the lowest energy according to the 10% rule? a. Primary producers b. Primary consumers c. Secondary consumers d. Tertiary consumers

d. Tertiary consumers