Invertebrate Biology Concepts

The video explains that invertebrates are animals without an internal skeleton, making up 97% of all animal species on Earth. It covers various types of invertebrates, including worms, insects, and octopuses, and describes their diverse body structures, such as soft bodies, protective shells, and different types of symmetry.

What percentage of animal species on Earth are invertebrates?

• 50%

• 100%

• 75%

• 97%

What is a common feature of all invertebrates?

• They have a backbone

• They have an internal skeleton

• They lack an internal skeleton

• They have wings

Which of the following is NOT an example of an invertebrate?

• Octopus

• Frog

• Insect

• Worm

What type of body structure might an invertebrate have?

• Fur

• Exoskeleton

• Internal skeleton

• Feathers

Which type of symmetry is NOT found in invertebrates?

• Hexagonal symmetry

• No symmetry

• Bilateral symmetry

• Radial symmetry