The respiratory system – Odd one out

The video tutorial discusses marine animals, highlighting the differences between fish and dolphins. It identifies the dolphin as the odd one out among salmon, shark, and swordfish, explaining that while the latter are fish that breathe with gills, the dolphin is a mammal that breathes with lungs.

Which of the following is not a fish?

• Dolphin

• Swordfish

• Salmon

• Shark

What characteristic makes a dolphin different from a salmon?

• Dolphins are mammals

• Dolphins lay eggs

• Dolphins have scales

• Dolphins have fins

Which of these animals uses gills to breathe?

• Seal

• Whale

• Shark

• Dolphin

How do dolphins breathe?

• Through gills

• Through lungs

• Through skin

• Through fins

Which of the following is a mammal?

• Salmon

• Shark

• Dolphin

• Swordfish