Characteristics of Life

Which is biotic?

dead leaf

How were Redi's and Pasteur's experiments similar?

Both tested the idea of spontaneous generation.

Living organisms share certain characteristics of life. Two living organisms, a pine tree and a sea urchin, are pictured below. Which statement describes a difference in one of the characteristics of life shared by these organisms?

One of the organisms gets energy from the sun, the other does not.

Which term best describes the temperature and weather conditions of an organism's environment?

abiotic factors

The excretions of living organisms are best categorized as which type of factor in an environment?

biotic

Which pair of terms best describes a wooden table?

biotic and nonliving

Which occurs when the body responds to the environment by maintaining a stable internal environment despite changing external conditions?

homeostasis

Which level of organization includes all the other levels of organization?

organism

Sweating when it is hot outside is an example of which characteristic of life?

responding to the environment

Which characteristic of life best describes the process of photosynthesis?

using energy