Animals

kingdom

What are their differences?

What are their similarities?

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