Quiz 2

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism
• commensalism
• competition
• parasitism

A relationship between two organisms in which one organism benefits and the other is unharmed...

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

A tapeworm and a cat have this type of relationship.

• mutualism
• parasitism
• commensalism
• competition

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

What type of symbiosis?  Skunks often live in burrows that have been dug and abandoned by woodchucks.  

• commensalism
• mutualism
• parasitism
• predation

An organism's _________ is defined as the environment in which it lives.

• habitat
• niche
• social structure
• ecosystem

Polar bears have physical features that allow them to live in colder places like the Arctic, where as the the brown bear is better suited to live in the woodlands. Which of the following key term best describes theses descriptions

• niche

• habitat

• dwelling place

• house

Starfish are probably the most important predator in the shallow ecosystem because they eat basically anything that they can come across. Their feeding activities control the whole ecosystem. This is an example of the starfish ___.

• habitat
• biotic factors
• tolerance level
• niche

Which would be the appropriate term for an organism that eats a producer?

• scavenger
• decomposer
• secondary consumer
• primary consumer

Why is some energy not passed on to the next trophic level?

• The organisms at each level use about 90% of the available energy to live.
• The statement is NOT true.  All energy IS passed from one trophic level to the next.
• The organisms at each level use about 10% of the available energy to live.
• Most energy is absorbed by the soil instead.