Introduction to Ecology

Which of the following is an example of an organism?

• Human
• Apple tree
• Yeast
• All of these

Which of the following is NOT an organism?

• Kangaroo
• Mushroom
• Computer
• Oak tree

• organism

• population

• community

• ecosystem

frogs, deer, birds, fish, and plants

• organism

• population

• community

• ecosystem

frogs, fish, insects, deer, birds, plants, plus water, rocks, soil, and air

• organism

• population

• community

• ecosystem

anything that can independently carry out life processes

• organism

• population

• community

• ecosystem

a community of organisms and their nonliving environment

• organism

• population

• community

• ecosystem

a group of individuals of the same species that live together in the same area at the same time

• organism

• population

• community

• ecosystem

all of the populations of different species that live and interact in an area

• organism

• population

• community

• ecosystem

An organism made of one cell is called

• unicellular
• multicellular