Kingdom Animalia
Animals are heterotrophic, multicellular organisms with organs or tissues. Most are mobile or have a mobile life stage. All have a larval or embryonic stage of development.
Animals also exhibit different kinds of symmetry: asymmetry, spherical, radial, and bilateral.
Finally, animals can be invertebrates (no backbone) or vertebrates (with backbone).
Biosphere logo and navigation buttons © 1999 Electric Rodent Web Design. All Rights Reserved. Advanced Placement Program is a registered trademark of the College Entrance Examination Board. AP is a trademark owned by the College Entrance Examination Board. No endorsement of any product is given.