Ecology Unit 6 Test

Which of the following is a density-dependent limiting factor?

• rainfall

• unusual weather

• competition

• natural disaster

Vines grow on a tree. The vines get light but the tree is not affected. What kind of relationship is this?

• Competition

• Mutualism

• Commensalism

• Parasitism

An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:

• Predator

• Autotroph

• Producer

• Decomposer

Any of the non-living factors that make up the environment.

• abiotic
• biotic
• antibiotic

Anything that prevents a population from growing too large.

• Biotic Factor

• Limiting Factor

• Abiotic Factor

• Ecosystem

Producer or consumer?

• Producer

• Consumer

Producer or consumer?

• Producer

• Consumer

An animal that eats food of both plant and animal origin is a

• Omnivore

• Scavenger

• Producer

• Herbivore

What type of symbiotic relationship is a cat and flea?

• Parasitism

• Mutualism

• Commensalism

• Communism

What type of symbiotic relationship are whales and barnacles? (only the barnacles benefit from attaching to the whales, but at no biological cost to the whale)

• Parasitism

• Mutualism

• Commensalism

• Communism