Final Review #3

What does symbiosis mean?

• Living separately, no relationship between 2 species

• Living together, close relationship between 2 species

• Living separately, long distance relationship between 2 species

• When one species kills and eats another

A tapeworm lives in the intestine of a cat absorbing nutrients through its skin. 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

Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales.  What kind of relationship is this?

• Mutualism 
• Parasitism 
• Commensalism 

In this picture, the ZEBRA is the __________________

• predator
• prey

All energy transformations in an ecosystem begin with

• a scavenger
• the sun
• a decomposer
• a herbivore

The direction of the flow of energy in a food web is represented by ___.

• Light bulbs
• Dotted Lines
• Arrows
• Bubbles

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.

• There would be a decrease in the grass/flowers population.

• There would be a decrease in the mice population.

• There would be an increase in the grass/flowers population.

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Who is the producer?

• lettuce

• greenfly

• ladybird

• thrush