Chapter 6 Intro to Animals/Sponges

Organisms in the Animal Kingdom share all of the following characteristics EXCEPT ____.

• They cannot make their own food.
• Their bodies are multicellular.
• They are all vertebrates.
• They all move.

Which is the main difference between invertebrates and vertebrates?

• Invertebrates are heterotrophs & vertebrates are not.
• Vertebrates are multicellular & invertebrates are not.
• Invertebrates are warm-blooded & vertebrates are not.
• Vertebrates have an endoskeleton & invertebrates do not.

One difference between a sponge and a shark is that a sponge ____.

• lacks a backbone
• is a single-celled organism
• makes its own food
• eliminates waste

The skeleton of a vertebrate differs from that of an arthropod in that the vertebrate's skeleton is ____.

• cartilage
• external
• internal
• soft

Which of the following best describes the skeleton of a vertebrate?

• covered with a shell
• external
• made of nerves
• made of bone

The nervous system of all adult vertebrates contains ____.

• a brain
• bone
• a heart
• vessels

Like other animals, all invertebrates have ____.

• many cells
• skin
• a skeleton
• a backbone

All of the following have an endoskeleton EXCEPT _____.

• beetle
• turtle
• whale
• wren

Why are sponges classified as animals?

• they digest food
• they have skeletons
• they breathe through gills
• they use their legs to move

How do sponges obtain the oxygen they need?

• air goes into lungs
• water flows over gills
• air enters the central cavity
• water flows over special cells