Invertebrate Wonders: Exploring the Diversity of Animal Life

The video introduces invertebrates, which are animals without internal skeletons, making up 97% of all animal species. It covers various phyla, including sponges, segmented worms, arthropods, mollusks, echinoderms, and cnidarians, highlighting their unique characteristics and diversity. The video concludes with a message on kindness.

What percentage of all animal species on Earth are invertebrates?

• 97%

• 75%

• 50%

• 99%

Which of the following is NOT a characteristic of invertebrates?

• Internal skeleton

• Exoskeleton

• Bilateral symmetry

• Radial symmetry

What is a unique feature of sponges among invertebrates?

• Internal organs

• Filter feeding

• Segmented body

• Exoskeleton

Which group of invertebrates includes earthworms and leeches?

• Mollusks

• Arthropods

• Segmented worms

• Cnidarians

What percentage of non-animal species do arthropods make up?

• 20%

• 50%

• 80%

• 90%

Which of the following is NOT an arthropod?

• Crab

• Spider

• Millipede

• Snail

What is a common feature of mollusks?

• Protective shells

• Segmented body

• Spiny skin

• Stinging tentacles

What does the term 'echinoderm' mean?

• Spiny skin

• Soft body

• Segmented body

• Stinging tentacles

Which of the following is a characteristic of cnidarians?

• Stinging tentacles

• Filter feeding

• Segmented body

• Exoskeleton

Which invertebrate group includes sea anemones and jellyfish?

• Arthropods

• Cnidarians

• Echinoderms

• Mollusks