Animals
kingdom
What are their similarities?
What are their
differences?
Objectives
 Name the main characteristics
 Explain what symmetry is
 Describe what is cephalization
 Mentioned the different body plans that animals
have
 Explain the difference of an open circulatory
system vs. a closed one
Characteristics
 Eukaryotes without cell wall
 Multicellular
 Heterotrophs
 Locomotion
Origin of animals
Differentiation
Specialization
Heterotrophic
Name the main characteristics of the animal kingdom
Recall the levels of
Classification
Classification;
Phylogenetic tree
Asymmetrical
Radial
Symmetrical
Body Symmetry
Animals are classified by different symmetry plans.
Planes
Lets do a worksheet on symmetry.
Name the 9 phylums as classification taxons.
Cephalization
Bilateral animals tend to have sensory and brain
in the front.
Body Plan
Most have a body cavity filled with fluid.
Classification;
Phylogenetic tree
Circulatory System
Most have a circulation system.
Circulatory System
 No circulatory system: ex. Sponges
 Open circulatory system: ex. Arthropods, mollusks
 Closed system: ex. mammals
Circulatory System
 No circulatory system: ex. Sponges
Circulatory System
 Open circulatory system: ex. Arthropods, mollusks
 Closed system: ex. mammals
Circulatory System
 Closed system: ex. mammals
Invertebrate vs.
vertebrates
Most have a circulation system.
The one thing that all invertebrates have in common is their lack
of a backbone; otherwise, they're as different from one another
as they are from vertebrates.
All vertebrates fall under one phylum, chordata;
invertebrates, on the other hand, include over 30 different phyla,
collectively accounting for 98 to 99 percent of all known animal
species.
Phylum Chordata
General Characteristics:
All chordates have a
• dorsal hollow nerve tube,
• a notochord, and
• pharyngeal gill slits.
All vertebrates (members of a subphylum of chordata) have a
backbone (spinal column) and a closed circulatory system.
Which phylum is closely related to Chordates?
Classification;
Phylogenetic tree