Articles on Invertebrates

Which phylum of invertebrates take in dissolved oxygen from the water through their skin?

• Segmented Worms

• Cnidarians

• Sponges (Porifera)

• Mollusk

What characteristic do all invertebrates have in common?

• They ALL have an external backbone or exoskeleton.

• They live in the ocean as marine animals.

• They live on land as terrestrial animals.

• They do NOT have backbones or internal skeletons.

What do echinoderms use for protection against predators?

• Spines

• Stinging cells

• venom

• ink

At student records common characteristics of several animals in a table.

How can the animals be classified, and why?

• Vertebrates; they possess hard outer body coverings.

• Vertebrates; they possess hard outer body coverings.

• Echinoderms; they lack wings and antennae.

• Arthropods; they have jointed legs.

Tags

NGSS.MS-LS4-2

The chart shows characteristics of four different groups of invertebrate animals.

Which set of characteristics describes an mollusk?

• Animal 1

• Animal 2

• Animal 3

• Animal 4

I am spiny, have a water vascular system with tube feet, radial symmetry, and am called a brittle star.

• Mullosk
• Arthropod
• Echinoderm
• Cnidarian

Tags

NGSS.MS-LS4-2

I have a soft-body, a hard shell, and live on land and water.  What am I?

• Mollusk
• Arthropod
• Echinoderm
• Cnidarian

Tags

NGSS.MS-LS4-2

What is an invertebrate?

• An animal with a backbone
• a mammal
• An animal without a backbone
• birds

Between 90-95% of all animals on earth can be classified as _____.

• invertebrates
• vertebrates
• reptiles
• mammals

The organism shown is an example of a(n)

• mollusk
• cnidarian
• sponge
• echinoderm