Biology Quiz

Name three things that animals compete for.

• Food, mates, territory

• Sunlight, water, nutrients

• Shelter, jobs, entertainment

• Oxygen, carbon dioxide, minerals

What are three things that animals compete for, based on the information provided?

• Food, territory, mates

• Water, shelter, light

• Nutrients, space, air

• Mates, light, territory

What is the role of photosynthetic organisms in an ecosystem?

• They decrease the biomass available on Earth.

• They are the primary consumers in food chains.

• They are the producers of biomass for life on Earth.

• They primarily function as tertiary consumers.

Which of the following best describes the beginning of a food chain?

• A secondary consumer that eats primary consumers.

• A producer which synthesizes molecules through photosynthesis.

• A tertiary consumer that feeds on secondary consumers.

• An organism that does not rely on others for food.

How are the numbers of predators and prey in a stable community related?

• Their numbers are constant and do not fluctuate.

• The number of predators increases as the number of prey decreases.

• The numbers of predators and prey rise and fall in cycles.

• Predators outnumber prey, maintaining ecological balance.

What term is used to describe the total mass of organisms in a given area or volume?

• Ecosystem

• Biomass

• Biodiversity

• Biome

Which of the following best describes organisms that produce their own food using sunlight or chemical energy?

• Consumers

• Decomposers

• Producers

• Carnivores

What term is used for animals that feed directly on producers?

• Secondary consumers

• Tertiary consumers

• Primary consumers

• Predators

Which of the following are considered secondary consumers in a food chain?

• Plants

• Herbivores

• Carnivores that eat herbivores

• Producers

What term describes consumers that obtain nutrients by consuming other secondary consumers?

• Primary consumers

• Producers

• Tertiary consumers

• Predators