Animal Classification

Bilateral symmetry, stingers with cnidocytes, and a complex nervous system.

Asymmetrical shape, no tentacles, and a well-developed brain.

Radial symmetry, tentacles with cnidocytes, and a simple nerve net.

Spherical body, no stingers, and a closed circulatory system.

Amphibians

Reptiles

1. Fish 2. Birds 3. Mammals

Invertebrates

Ability to fly

Number of legs

Size of the organism

Presence of a backbone or spinal column

Camouflage, mimicry, chemical defense, and physical adaptations like hard exoskeletons

Loud vocalizations

Heat resistance

Flying ability

Complex, single-celled organisms with non-porous bodies and no specialized feeding cells.

Simple, multicellular animals with porous bodies and specialized cells for filter feeding.

Photosynthetic, plant-like organisms with rigid structures and no ability to move.

Highly intelligent, multicellular animals with exoskeletons and no need for filter feeding.

Chordata

Echinodermata

Arthropoda

Mollusca

Seals, sea lions, walruses

Sharks, dolphins, whales

Jellyfish, sea anemones, corals

Starfish, sea urchins, sea cucumbers

Animals with exoskeletons

Animals with a backbone or spinal column, well-developed brain and complex nervous system, closed circulatory system, and bony or cartilaginous skeleton.

Animals with no nervous system

Animals with open circulatory system

Invertebrates have a backbone and make up about 50% of all animal species.

Invertebrates are all warm-blooded animals.

Invertebrates are only found in the ocean.

Invertebrates lack a backbone or spinal column and make up about 97% of all animal species.

Arthropods contribute to the ecosystem by serving as decomposers, pollinators, and a food source for other animals.

Arthropods contribute to the ecosystem by causing harm to other species

Arthropods contribute to the ecosystem by disrupting the balance of the food chain

Arthropods contribute to the ecosystem by competing with other animals for resources