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CHAPTER 7 – ANIMALS

Traits of Animals

 

2 Groups of Animals

 

_____________________________ - Have a backbone

 

_____________________________ - Do not have a backbone

 

 

_______________________ - Balanced arrangement of body parts around a center point or along a center line.

 

3 Types of Symmetry

 

 

 

 

 

  

 

How animals are classified

 

Organisms are classified into 5 Kingdoms:

 

 

Animals are further classified into ___________________. There are 9 __________________ of animals:

 

Invertebrates

 

  1. ________________________ - (5,000) Smallest phylum, simplest animals, assymetrical.

 

  1. ________________________ - (11,000) Ex: Jellyfish, sea anemone. Radial symmetry.

 

  1. ________________________ - Simplest worms, bilateral symmetry. Ex: Tapeworm, planarian.

 

  1. ________________________ - Bilateral symmetry. Ex: hookworm

 

  1. ________________________ - Most complex worm, bilateral symmetry. Ex: earthworm, leech.

 

  1. ________________________ - (80,000) Bilateral, radial symmetry. Ex: Snails, octopus, clams, squid.

 

  1. ________________________ - (826,000) Largest phylum. Bilateral symmetry. Ex: insects, lobsters, crayfish, crabs.

 

  1. ________________________ - (5,000) Radial symmetry. Ex: starfish, sand dollar.

 

Vertebrates

 

  1. ________________________ - (47,000) Most complex phylum. Have a tough, flexible rod along their back. Ex: humans, birds, reptiles, fish).

 

 

 

SPONGES

 

 

Feeding Mechanism:

 

Three types of cells

 

 

      Reproduction

 

 

STINGING-CELLED ANIMALS (Ex: jellyfish, coral, sea anemone, hydra)

 

 

 

 

Feeding Mechanism

 

Reproduction

 

 

 

WORMS  (Ex: Roundworm, Flatworm, Segmented Worm)

 

Three Phyla of worms exist:

 

 

FLATWORMS (Simplest worms)

 

Ex: Tapeworm

 

 Ex: Planarian

 

 

ROUNDWORMS – Worms with ______________ bodies & ______________ ends

 

 

 

Ex: Hookworm

 

SEGMENTED WORMS – Bodies are divided into sections called __________________

 

 

Ex: Leech

 

Ex: Earthworm

 

Feeding Mechanism

 

Earthworms Help the Environment

 

 

SOFT-BODIED ANIMALS – Animals with a ____________________ that is usually protected by a ________________________.

 

 

 

3 Classes of Soft-Bodied Animals

 

_______________________________________

 

 

_______________________________________

 

 

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