Last Day of Second Grading Period

Primary succession occurs in an area that has:

• soil

• no soil

• some soil

• none of these

___ are the first organisms to colonize an area and begin the process of ecological succession.

• foundational organisms

• introductory organisms

• primary organisms

• pioneer species

Which of the following is the correct order of ecological succession?

• grass - shrubs - lichens - trees

• lichens - shrubs - grasses - trees

• lichens - grasses - shrubs - trees

• grasses - lichens - shrubs - trees

All energy transformations in an ecosystem begin with

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

Which relationship describes predator/prey

• hawks and shrubs
• mountain lion and deer
• frogs and trees
• grasses and crickets

an organism that can produce its own food through photosynthesis

• consumer
• heterotroph
• autotroph
• herbivore

Commensalism is

• one species benefits, the other is not affected
• both species benefit
• both species are harmed
• one species benefit, the other is harmed

__________ is an organism that only eats plants for energy.

• Carnivore
• Herbivore
• Omnivore
• Terivore

__________ is an organism that eats BOTH plants and animals for energy.

• Omnivore
• Darnivore
• Carnivore
• Herbiovre

Lions only eat buffalo, antelopes, zebras and crocodiles. They are called __________.

• Omnivore
• Herbivore
• Carnivore
• Delivore