Biology Course Final Practice

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

• Dark moth
• Light moth
• Both will be equally successful
• Neither will be successful

What process is being shown in this image?

• Variation
• Natural Selection
• Selective Breeding
• Homeostasis

Which trait do only humans have, according to the cladogram?

• jaws
• mammary glands & hair
• terrestrial during all life stages
• bipedal & opposable thumbs

Which group of animals on this tree are most closely related to birds?

• Saurischian dinosaurs

• Ornithischian dinosaurs

• Crocodiles

• None of these are related to birds

An organism that makes its own food through photosynthesis is called...

• Consumer
• Producer
• Heterotroph
• Decomposer

Organisms that recycle nutrients and feed on dead/decaying plants and animals

• Producer
• Autotroph
• Decomposer
• Predator 

How much energy is passed from one trophic level to the next?

• 10%
• 50%
• 90%
• 100%

In an ecosystem, which of these is considered an abiotic factors?

• Oxygen

• Predators

• Competition for food

• Decomposers

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%