Simple Organisms, Invertebrates, and Vertebrates Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 17 clues. Answers range from 5 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
change
organism without a backbone
a process of change in an organism from one life stage to another
organism that lives in/or another organism and feeds off of it
organism with a backbone
grow
a group of tissues working together to perform a complex function
very small organism such as bacteria, algae, and fungi that cannot be seen with out a microscope
bacteria, fungi, or protozoa that feed on dead organisms
single-celled organisms thought to be the first organisms on Earth
a group of vertebrates that undergo metamorphosis
an automatic behavior
a group of vertebrates that have hair and give birth to live young
a tough, flexible material that covers bones and joints
a type of mammal that nourishes its live-born young in a pouch
a type of reaction in which signals are immediately transmitted to the spinal cord and the brain
to react to a prompt or stimulus
