This printable crossword puzzle on the topic of Ecology & Evolution has 17 clues. Answers range from 4 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Animals that have no backbone or vertebral column
These animals are in the phylum Porifera
A group that includes hydras, jellyfishes, and corals
Soft, flattened worms that have tissues & internal organ systems
Unsegmented worms that have pseudocoeloms and digestive systems with two openings (mouth & anus)
Worms with segmented bodies
Soft bodied animals that usually have an internal or external shell
This group includes animals such as insects, crabs, centipedes and spiders
Aquatic vertebrate with paired fins, scales and gills
Vertebrate that lives in water as a larva and on land as an adult
A vertebrate that has dry, scaly skin, lungs, and eggs
Warm blooded vertebrate with feathers, wings and lays eggs
Vertebrate that is warm blooded, has hair, a 4-chambered heart and gives milk to their young.
Humans are this genus and species (no space)
Egg laying mammals are in this species
A kangaroo is a ______ mammal
Every animal must do this to survive