Ecosystem Quiz 1

Ostriches and gazelles eat together.  They both watch for predators and danger.  Since they see things differently, they each can identify threats the other animal may not see.  Both species are benefited.  

• mutualism
• commensalism
• predation
• parasitism

Yucca flowers are pollinated by yucca moths.  The moths lay their eggs in the flowers and the eggs hatch. The larvae eat some of the seeds, and  spread them around.  Both species are benefited.

• mutualism
• commensalism
• parasitism
• competition

Mistletoe takes water and nutrients from the oak tree. This is good for the mistletoe but bad for the tree.

• mutualism
• commensalism
• parasitism
• competition

A bison walks through the grass, insects fly up and are seen and eaten by egrets.  This neither harms nor helps the bison, but it is easier for the egrets to get food.

• mutualism
• parasitsm
• commensalism
• competition

A flea feeds on a mouse’s blood.  This is good for the flea but bad for the mouse.

• mutualism
• commensalism
• parasitism
• competition

Hermit crabs live in shells that snails don't use anymore. The hermit crab gets a nice free home.  This neither harms nor helps the snails.

• mutualism
• commensalism
• parasitsm
• predation

Temperature, light, air, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

Is a deer an abiotic or biotic factor? 

• abiotic
• biotic

Is a fern an abiotic or biotic factor? 

• abiotic
• biotic

Is sunlight an abiotic or biotic factor? 

• abiotic
• biotic