glencoe science blue ch 5

Which of these is true?

• Consumers produce their own food.

• Producers never make their own food.

• Energy is never converted from one form to another.

• Energy can be transferred form one organism to another.

A puddle is formed after a rainstorm. After two days of sunshine, the puddle disappears. What happened to the water?

• It became a biotic factor.

• It went through chemosynthesis.

• It oxidized.

• It evaporated.

Which of these organisms is the first step in a food chain?

• producers

• amphibians

• consumers

• mammals

Trees at higher elevations usually are __________ than those at sea level.

• filled with more fruit

• shorter

• affected more by high temperatures

• taller

Which of these is the correct order of a food chain?

• A rabbit is eaten by grass, which is eaten by a wolf.

• A wolf is eaten by grass, which is eaten by a rabbit.

• Grass is eaten by a rabbit, which is eaten by a wolf.

• A rabbit is eaten by a wolf, which is eaten by grass.

DNA in organisms is formed by ___________.

• nucleic acids

• biotic factors

• hydrochloric acid

• acid-base reactions

Which of these can add nitrogen to the soil?

• plastic

• compost

• paper

• glass

The air that surrounds Earth is called __________.

• humus

• the atmosphere

• respiration

• the core

Which group makes up the largest level of an energy pyramid?

• consumers

• carnivores

• producers

• omnivores

Which of these is an energy source for chemosynthesis?

• moonlight

• omnivores

• sulfur molecules

• sunlight