Animales simples: explorando las esponjas y cnidarios

The video tutorial explores marine invertebrates, focusing on sponges and their classification as poriferae due to their porous bodies. It then introduces sea anemones, part of the more advanced nidarians, and describes their radial symmetry and tentacle features. The tutorial concludes with a discussion on nesters, highlighting their complex structures and predatory mechanisms.

What group do sponges belong to due to their porous bodies?

• Arthropoda

• Cnidarians

• Mollusca

• Poriferae

Which invertebrate group does the sea anemone belong to?

• Mollusks

• Echinoderms

• Nidarians

• Poriferae

What is the shape of a sea anemone called?

• Hexagonal symmetry

• Asymmetrical

• Radial symmetry

• Bilateral symmetry

What do nesters use to capture their prey?

• Tentacles

• Claws

• Fins

• Wings

What feature makes nesters more complex than sponges?

• They can fly

• They live on land

• They have a backbone

• They have specialized cells