Characteristics of Living Things

What is the most basic unit of life?

• cell
• tissue
• organ
• organ system

Green plants produce their own food through the process of photosynthesis. Which characteristic of life does this represent?

• All living things use energy

• All living things contain cells

• All living things maintain homeostasis

• All living things grow

Over many hundreds of years, a population of rabbits living in the woods adapts to its surrounding with brown fur. Which characteristic of life does this represent?

• All living things adapt to their environment

• All living things grow

• All living things use energy

• All living things have cells

Which of the following is an example of homeostasis?

• adapting to your environment

• maintaining an appropriate respiration rate

• the sum of all of your chemical reactions

• being composed of more than one cell

A baby song bird hatches from its egg with both parent songbirds watching. Which characteristic of life does this represent?

• All living things reproduce

• All living things maintain homeostasis

• All living things use energy

• All living things grow

An adult hydra is producing its offspring through budding. Which characteristic of life does this represent?

• All living things use energy

• All living things reproduce

• All living things contain cells

• All living things grow

The scientific name for something living is a(an)

• organism
• cell
• tissue
• human

It is hot outside. You start sweating. In this case, the hot weather is the...

• stimulus
• response
• cause and effect
• responder

Which of the following is a stimulus?

• removing your hand from a hot stove

• swinging a bat at a baseball

• screaming when something scares you

• a ball moving from the pitching mound to home plate towards a batter

A camel has eyelashes that work to keep the dust and sand out of its eyes. Which characteristic of life does this represent?

• All living things evolve/adapt to their environment

• All living things grow

• All living things have cells

• All living things use energy