Animales simples: investigando a los moluscos

The video explains that mollusks are invertebrate animals, including clams, squid, and mussels. Most have a hard outer shell for protection, while some have internal shells or none at all. Mollusks possess a well-developed nervous system with a brain and sensory organs like eyes.

Which of the following animals is classified as a mollusk?

• Frog

• Clam

• Eagle

• Shark

What is a common feature of most mollusks like oysters and snails?

• They have a hard outer shell.

• They have fur.

• They can fly.

• They have wings.

Which mollusk is known to have an internal shell?

• Slug

• Clam

• Squid

• Snail

What is a characteristic of mollusks like slugs?

• They have a shell made of feathers.

• They have a hard outer shell.

• They have an internal shell.

• They have no shell at all.

What is a feature of the mollusk's nervous system?

• It is similar to that of plants.

• It is not well-developed.

• It includes a brain and eyes.

• It lacks sensory organs.