Animal Evolution and Features Quiz

What is a unique feature of sponges that distinguishes them from typical animals?

• They have true tissues and organs.

• They have a simple body plan with two layers of cells.

• They have specialized cells that perform specific jobs.

• They have a distinct head end with nerve clusters.

Which group of animals developed true tissues as a significant evolutionary advancement?

• Sponges

• Flatworms

• Cnidarians

• Mammals

What is the body symmetry called that is found in cnidarians?

• Bilateral symmetry

• Radial symmetry

• Asymmetry

• Lateral symmetry

Which feature allows flatworms to have better awareness of their surroundings?

• True tissues

• Bilateral symmetry

• Cephalization

• Radial symmetry

What evolutionary feature allows flatworms to move in more complex ways?

• True muscle tissue

• Stinging cells

• Specialized cells

• Radial symmetry

Which group of animals is known for having a simple body plan with two layers of cells?

• Sponges

• Cnidarians

• Flatworms

• Mammals

What is the primary function of the specialized cells in sponges?

• To develop true tissues

• To filter food from water

• To provide a nervous system

• To create bilateral symmetry

Which group of animals was the first to develop bilateral symmetry?

• Sponges

• Cnidarians

• Flatworms

• Jellyfish

What is the significance of the evolutionary changes in these animal groups?

• They show that complex features developed quickly.

• They illustrate the importance of true tissues.

• They highlight the gradual development of complex organisms.

• They demonstrate the superiority of bilateral symmetry.

What does the presence of simple animals today suggest about evolution?

• Simpler forms are always less successful.

• Complex forms are always more successful.

• Simpler forms can be very successful in their environments.

• Evolution always favors complexity.