Basic Life
_________________ contain all the chemicals living things need.
Nutrients
_____________ is the study of living things.
Biology
A major change in form that occurs as some become adults is called ________________________.
metamorphosis
Flowering plants are called _________________________.
angiosperms
__________________ are basic units of life.
Cells
Another word for a living thing is an ________________________.
organism
___________________ is the lowest level of the classification system.
Species
_________________ is a nonflowering seed plant.
Gymnosperm
____________________ breaks down food.
Digestion
An organism that is too small to be seen without a microscope is called a ______________________.
microorganism
The two-word name of a species is its _______________ name.
scientific
_____________________ is made up or tubes, or vessels.
Vascular tissue
The life activity _____________________ means that living things can change over time.
development
An organism that lives on a living organism and harms it is a ________________________.
______________ are animals that have a backbone.
Vertebrates
A beginning plant is called an ___________________.
embryo
______________ explains how living things produce offspring.
Reproduction
Most animals need to __________________ to get food.
move
______________________ are animals without a backbone.
Invertebrates
______________________ first classified plants and animals.
Aristotle