Flatworms and Their Characteristics

The video tutorial covers the feeding habits of sponges, introduces worms, and focuses on flatworms, discussing their characteristics and classification. It explains the triploblastic layers of flatworms and includes a hands-on activity where students create worm models using clay to understand the structure of flatworms.

What is the primary way sponges obtain their food?

• By absorbing sunlight

• By hunting small fish

• By filtering water

• By trapping insects

Which of the following is NOT a characteristic of cnidarians?

• Having tentacles

• Living in aquatic environments

• Being triploblastic

• Possessing a central mouth

What type of worms were introduced in the class?

• Earthworms

• Segmented worms

• Flatworms

• Roundworms

Which of the following is an example of a flatworm?

• Leech

• Earthworm

• Planarian

• Tapeworm

Flatworms are classified in which of the following biomes?

• Forest

• Aquatic

• Tundra

• Desert

What does 'triploblastic' refer to in flatworms?

• Having three cell layers

• Having three body segments

• Having three types of tentacles

• Having three digestive organs

Which layer is the innermost in the structure of flatworms?

• Endoderm

• Exoderm

• Mesoderm

• Ectoderm

What color was used to represent the mesoderm in the clay model activity?

• Green

• Blue

• Red

• Yellow

In the clay model activity, what was the purpose of flattening the mesoderm?

• To make it easier to color

• To fit it around the endoderm

• To make it look like a real worm

• To separate it from the ectoderm

What is the outermost layer in the worm model created during the activity?

• Endoderm

• Mesoderm

• Ectoderm

• Exoderm