Invertebrates and Their Characteristics

What percentage of animals are invertebrates?

• 30%

• 95%

• 75%

• 50%

What type of symmetry do humans have?

• Radial symmetry

• Asymmetrical

• Bilateral symmetry

• None of the above

What do neurons allow an organism to do?

• Sense the environment

• Digest food

• Reproduce

• Grow

What is the function of ganglia?

• Carry messages along a single path

• Absorb nutrients

• Filter oxygen

• Control different body parts

What percentage of invertebrates are species of beetles?

• 95%

• 30%

• 50%

• 75%

Which animal is known for having asymmetry?

• Jellyfish

• Sea star

• Sponge

• Human

How do sponges feed?

• By hunting

• Absorbing nutrients from the host

• Sweeping in water through their pores

• By photosynthesis

What is unique about the circulatory system of cephalopods?

• It is an open system

• They use gills instead

• They do not have one

• It is a closed system

What do planarians use to detect food?

• Gills

• Sensory lobes

• Radula

• Tentacles

Which of the following is a characteristic of worms?

• None of the above

• Bilateral symmetry

• Radial symmetry

• Asymmetrical