2nd Semester Test #2

A single organism is called a _________?

• individual

• population

• community

• ecosystem

The environment in which an organism lives is called its ________.

• habitat

• niche

• ecosystem

• community

The ability to do work is called ________.

• energy

• force

• power

• mass

The structure/tissue in plants that moves sugars downward from the leaves is called ________.

• phloem

• xylem

• cambium

• epidermis

The process by which cells use oxygen to produce energy from food molecules is called ________.

• cellular respiration

• photosynthesis

• fermentation

• transpiration

A solid whose atoms, ions, or molecules are arranged in a regular, repeating pattern is called a ________.

• crystal

• amorphous solid

• liquid

• gas

Any natural material that is used by humans is called a ________.

• natural resource

• synthetic material

• artificial product

• man-made object

An organism that cannot make its own food and must feed on other organisms for energy and nutrients is called a ________.

• heterotroph (consumers)

• autotroph (producers)

• decomposer

• photosynthesizer

A benefit that humans obtain from ecosystems is called an ________.

• ecosystem service

• ecosystem product

• ecosystem cycle

• ecosystem process

When one organism benefits from an interaction, and the other is unaffected, this is called ________.

• commensalism

• parasitism

• mutualism

• competition