Page 296 - Microsoft Word - LessonPlan-Overview.doc

Unit 18: Biology Part 1 Page 11 of 60

Arthropods, or organisms in the use the following groups to classify
phylum arthropoda, are organisms life: Kingdom, phyla, class, order,
with segmented bodies and family, genus, and species. A good
appendages on at least one pneumonic for this hierarchy is
segment. Kings Play Cards On Funny Green
Stools; each first letter stands for
Arthropods are covered my hard the first letter of a group in the
external skeletons. When they hierarchy. We’ll learn how to
grow they shed these skeletons in classify using this system.
a process called molting.

For gas exchange aquatic
arthropods have gills, while
terrestrial (land-based) arthropods
have either a tracheal systems or
book lungs. Tracheal systems are
air sacs fed by pores in the
exoskeleton. Book lungs are gills
modified to extract oxygen from

air.

Insects are not only the most
diverse subgroup of arthropods,
but with over a million discovered
species it is the most diverse group
of animals on earth. Although they
can’t all be as beautiful as a
butterfly, they all play important
roles in their ecosystems—just
think of where we would be
without bees!

In biology we classify organism. By
“classify” we mean that we place
organisms into groups according to
physical characteristics they have.
These groups are hierarchical. The
some groups fit inside others. We

© 2011 Supercharged Science www.ScienceLearningSpace.com

698