Harcourt Science, Grade 4, Chapter 2

Front 1

____________ is a gas breathed out by animals.

Back 1

carbon dioxide

Front 2

________ are substances, such as minerals, that all living things need to grow.

Back 2

nutrients

Front 3

______________ is the process that allows plants to make their own food.

Back 3

photosynthesis

Front 4

An object that has ________ can be divided into two parts that look exactly the same.

Back 4

symmetry

Front 5

_____________ is the giving off of water by plant parts.

Back 5

transpiration

Front 6

A _______ is one main root that goes deep into the soil.

Back 6

taproot

Front 7

A plant with ____________ has many roots of the same size. They grow long, but not deep.

Back 7

fibrous roots

Front 8

When a seed has its needs met, it will ________, or sprout.

Back 8

germinate

Front 9

______ are tiny cells. They are smaller than seeds and can be carried by wind, water, and animals.

Back 9

spores

Front 10

Potatoes are ______, or swollen underground stems.

Back 10

tubers