Lesson 1: Living Things and the Environment

Which of the following lives in a

prairie ecosystem?

• grass

• mushroom

• oak tree

• woodpecker

Which of the following is a biotic

factor?

• temperature

• sunlight

• bacteria

• water

Which of the following lists the levels of an ecosystem in order from largest to smallest?

• population, organism, community,

  ecosystem

• ecosystem, community, organism,

  population

• organism, community, population,

  ecosystem

• ecosystem, community, population,

  organism

An organism gets food, water, shelter, and other things it needs to live, grow, and reproduce from its

• population

• habitat

• abiotic factors

• species

The nonliving things that interact with an organism are called biotic factors.

• true

• false

The study of how living things interact with each other and their environment is called ecology.

• true

• false

A group of organisms that can mate with each other and produce offspring that can also mate and reproduce is called a species.

• true

• false

oxygen is an abiotic factor in the environment that is important for plants to make their own food.

• true

• false

All the organisms that live in a particular area and their nonliving surroundings make up an ecosystem.

• true

• false

All the members of one community living in a particular area make up a population.

• true

• false