Life, from cells up
Biology is the study of living things, and this puzzle gathers its essentials. You'll be finding the building blocks — the CELL and its NUCLEUS and MEMBRANE — that make up every TISSUE and ORGAN of an ORGANISM, right down to the PROTEIN and ENZYME that keep it running.
Because every new puzzle reshuffles the lab, no two biology word searches are the same. One round a backwards CHROMOSOME hides in a corner; the next a diagonal EVOLUTION appears across the middle.
From microbes to ecosystems
Life ranges from the microscopic to the planet-wide, and the words are here. Meet the single-celled AMOEBA, the MICROBE and BACTERIA, the floating PLANKTON and the FUNGUS. Learn how MITOSIS divides cells, how GENETICS, the GENOME and CHROMOSOMEs pass on traits, how EVOLUTION shapes every SPECIES, and how ECOLOGY links each VERTEBRATE to its HABITAT.
It's a great fit for a science topic on living things. Tracking down C-H-R-O-M-O-S-O-M-E turns spelling practice into a biology lesson.
How to play
Drag across a word, or click its first and last letter — both work. Each word you spot locks in with its own colour and ticks off the list, so you always know what's left to find.
Want a real challenge? Switch to Medium or Hard for a bigger grid with diagonals and reverse words. Stuck on one? Tap Hint for a nudge, or Solve to reveal them all at once.
Print a biology word search pack
Tap Download for a printable PDF of fresh biology puzzles, with optional answer keys. Choose how many you want and how many per page — perfect for a science topic, a classroom, or a quiet afternoon.
Teachers love these for science lessons on living things. Add a name-and-date line and you've got ready-to-print worksheets in seconds, free and account-free.
Frequently asked questions
What's in the biology word search?
The science of life — cells, organisms, tissues and organs, plus genetics, evolution, microbes and ecology. Each puzzle uses a fresh mix.
Is the biology word search free to print?
Yes. Play free online or download a printable PDF pack with optional answer keys — no sign-up required.
Is it suitable for kids?
Absolutely. Easy mode keeps the grid small with no diagonals or reverse words, perfect for a science lesson and young learners.