Chapter 3 The biosphere

The study of how living things interact with one another and with their environment.

• Biology
• Lithology
• Ecology
• Farmacology

Organisms that cannot make their own food and must obtain energy from external sources are called

• autotrophs
• heterotrophs
• thylakoids
• plants

What is an autotroph?

• an organism that can make their own food. 
• an organism that cannot make their own food
• Herbivore
• Omnivore

What process occurs when light energy is captured in autotrophs and converted into sugar?

• Photosynthesis
• Cellular Respiration

What kills and eats only other meat animals? 

• omnivores
• herbivores
• carnivores
• detritivores

What is a herbivore?

• an animal that gets energy from eating other animals
• an organism that gets energy from eating only plants
• an animal that gets energy by eating both plants and other animals

Which term describes a group of different species that live together in a defined area?

• a population

• a community

• an ecosystem

• a biosphere

Primary producers are organisms that

• rely on other organisms for their energy and food supply

• consume plant and animal remains and other dead matter

• use energy they take in from the environment to convert inorganic molecules into complex organic molecules

• obtain energy by eating only plants

The series of steps in which a large fish eats a small fish that has eaten algae is a

• food web

• food chain

• pyramid of numbers

• pyramid of biomass

The total amount of living tissue at each trophic level in an ecosystem can be shown in a(n)

• energy pyramid

• pyramid of numbers

• biomass pyramid

• biogeochemical cycle