Mollusks, Arthropods, and Echinoderms

Front

What are mollusks?

Back

Mollusks are a diverse group of invertebrates that include snails, clams, and octopuses. They typically have soft bodies and many have a hard shell.

Front

What are arthropods?

Back

Arthropods are invertebrates with an exoskeleton, segmented bodies, and jointed appendages. Examples include insects, spiders, and crustaceans.

Front

What are echinoderms?

Back

Echinoderms are marine invertebrates characterized by their radial symmetry and a water vascular system. Examples include starfish, sea urchins, and sand dollars.

Front

What is the function of tube feet in echinoderms?

Back

Tube feet are used for movement, feeding, and respiration. They operate through the water vascular system and end in suction cups.

Front

Do echinoderms have a brain?

Back

No, echinoderms do not have a brain or a centralized nervous system.

Front

What is the water vascular system?

Back

The water vascular system is a network of fluid-filled canals in echinoderms that helps with movement, feeding, and gas exchange.

Front

What is an exoskeleton?

Back

An exoskeleton is a hard outer structure that provides support and protection to arthropods.

Front

How do sea urchins protect themselves?

Back

Sea urchins have spines that provide protection from predators and help them move.

Front

What is the main characteristic of arthropods?

Back

The main characteristic of arthropods is their segmented body and jointed limbs.

Front

What are the main classes of mollusks?

Back

The main classes of mollusks include Gastropoda (snails), Bivalvia (clams), and Cephalopoda (octopuses and squids).