Animal Kingdom Invertebrates Sponges Annelids Worms Mollusks Oysters

Animal Kingdom: Invertebrates Sponges Annelids: Worms Mollusks: Oysters, clams, octopus, snails Arthropods: Insects, spiders, crab/lobster Echinoderms: Starfish

Sponges § Feed by drawing water into spores § No body symmetry, no tissues or organ system

Sponges

Annelids: Worms § Bodies are divided into segments. § Have very well-developed internal organs. § Some have long bristles, some have short. Others seem smooth. § There about 9, 000 species of Annelids known today, including worms and leeches.

Annelids: Worms

Mollusks: Mussel, clam, snail… § Have soft, skin-like organ covered with a hard outside shell. § Some live on land, such as the snail and slug. § Others live in water, such as the oyster, mussel, clam, squid and octopus.

Mollusks: Mussel, clam, snail…

Arthropod: Crustaceans (crab/lobster) § Have hard, external shell which protects their body. § Have a head and abdomen. § Head has antennae, which are part of their sensory system. § Abdomen includes heart, digestive system and reproductive system. § Abdomen also has appendages, such as legs, for crawling and swimming. § Many have claws that help with crawling and eating.

Arthropod: Crustaceans (crab/lobster)

Arthropods: Arachnids (spiders) § Have a hard exoskeleton and jointed appendages for walking. § Unlike other arthropods, spiders do not have antennae. § Common arachnids are the spider, scorpions, ticks and mites.

Arthropods: Arachnids (spiders)

Arthropod: Insects § Largest group of arthropods (over 800, 000). § Are very adaptable, living almost everywhere in the world. § Have an exoskeleton that covers their entire body. § An insect's body consists of the head, thorax and abdomen.

Arthropod: Insects

Echinoderm: Starfish § Marine animals that live in the ocean. § Have arms or spines that radiate from the center of their body. § Central body contains their organs, and their mouth for feeding. § Sea stars, commonly known as the starfish, have 5 or more arms attached to their body. § Sea urchins have many spines connected to their body. These spines help to protect them from predators.

Echinoderm: Starfish