Invertebrate Classification and Characteristics

The video tutorial introduces invertebrates, animals without a backbone, and provides examples such as sponges, jellyfish, flatworms, roundworms, earthworms, arthropods, and mollusks. It explains their classification and habitats, highlighting that 97% of animal species are invertebrates. The video concludes with interesting facts about their role in the ecosystem.

What distinguishes invertebrates from vertebrates?

• Presence of a backbone

• Ability to fly

• Living in water

• Having a shell

Which group do sponges belong to?

• Mollusca

• Porifera

• Arthropoda

• Cnidaria

Where are jellyfish primarily found?

• Mountains

• Forests

• Oceans

• Deserts

Flatworms and tapeworms belong to which group?

• Arthropoda

• Nematoda

• Annelida

• Platyhelminthes

Which of the following is a characteristic of roundworms?

• They live in cold climates

• They have a shell

• They are parasitic

• They have jointed legs

Earthworms belong to which group?

• Mollusca

• Cnidaria

• Annelida

• Arthropoda

Which of the following is NOT an arthropod?

• Spider

• Lobster

• Butterfly

• Jellyfish

What is a common feature of arthropods?

• They have a backbone

• They live in water

• They have jointed legs

• They have a shell

Mollusks are commonly known as what?

• Sponges

• Worms

• Shellfish

• Insects

Approximately what percentage of animal species are invertebrates?

• 75%

• 50%

• 97%

• 100%