Unit 7: Test #1

A group of eagles living around Lake Tahoe would be considered a(n):

• Abiotic factor

• Population

• Community

• Ecosystem

Fish, their predators and the water, sunlight, and plants that they rely on would be considered a(n):

• Abiotic factor

• Population

• Community

• Ecosystem

Which of the following is NOT a characteristic of a living thing?

• moves around

• uses energy for metabolism

• contains cells

• reproduces

A field of sunflowers facing towards the sun is an example of

• metabolism

• response to stimuli

• growth

• asexual reproduction

At which point in the cladogram to the right do you think would represent having the characteristic of wings?

• Point A

• Point B

• Point C

• Point D

If an organism divides and produces an exact copy of itself, the organism

• Must have a virus and be infecting its own cells

• Must be a combination of two plants

• Has reproduced asexually

• None of the above

What is one biotic factor that affects the size of a population in an ecosystem?

• local geography

• average yearly temperature

• number of predators present

• average yearly precipitation

Organisms, such as plants or phytoplankton that carry out photosynthesis would cause a decrease of which gas in the atmosphere?

• oxygen

• carbon dioxide

• water

• ozone

In the carbon cycle, decomposers return carbon to the soil. Which of the following is NOT something that decomposers can break down?

• waste products like urine or feces

• the bodies of dead plants and animals

• carbon dioxide found in the air

• scraps of discarded food

Humans increase carbon dioxide (CO2) in the atmosphere, and contribute to the carbon cycle by

• combustion from driving cars

• planting trees to improve photosynthesis

• conserving energy with alternative energies

• using more solar power energy