Printable Puzzles / Biology Word Search

Biology Word Search

This free printable biology word search hides 12 biology words such as Evolution, Nucleus, and Species in the grid. It is a favorite for classrooms, homeschool lessons, and vocabulary practice. Print as many copies as you like — always free, with no sign-up and no watermark.

Circle every hidden word, then reveal the answer key to check your work. Prefer it easier or harder? This puzzle also comes in preschool, easy, hard, and large-print versions, so you can match it to any age or skill level.

Biology Word Search

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Find these words

Bacteria
Cell
Ecosystem
Enzyme
Evolution
Genetics
Habitat
Nucleus
Organism
Oxygen
Species
Tissue

Other difficulty levels

Biology Word Search for Preschoolers

Free printable

Easy Biology Word Search

Free printable

Hard Biology Word Search

Free printable

Large Print Biology Word Search

Free printable

More free puzzles

Make your own with the word search maker, or try a sudoku, maze, or crossword.

Frequently asked questions

Is the Biology word search free to print?

Yes. Every Biology word search on Puzzle Printly is completely free with no sign-up, no watermark, and no limit on how many copies you print.

How many words are in the Biology word search?

The standard Biology puzzle hides 12 themed words. The preschool and easy versions use fewer words placed across and down only, while the hard version packs them in every direction.

Does it include an answer key?

Yes. Click “Show answer key” under the puzzle to highlight every hidden word, then print the key if you want to check solutions later.

What ages is this Biology word search best for?

The standard grid suits about ages 8 and up. Younger children can use the preschool or easy Biology version, and the large-print edition is easy on the eyes for seniors.