Animales complejos: peces

The video explores the evolution and diversity of fish, highlighting that they were the first vertebrates on Earth. It explains how fish breathe through gills, which extract oxygen from water. Fish are ectothermic, meaning their body temperature varies with the environment. The video also covers fish locomotion, detailing the role of fins, and describes their sensory capabilities. Finally, it discusses the diversity among fish, including sharks with cartilage skeletons and other fish with bony skeletons.

Approximately how many years ago did fish first appear as vertebrates on Earth?

• 250 million years ago

• 1 billion years ago

• 500 million years ago

• 100 million years ago

What organ do fish use to extract oxygen from water?

• Lungs

• Fins

• Gills

• Scales

What term describes animals whose body temperature changes with the environment?

• Thermogenic

• Ectothermic

• Endothermic

• Homeothermic

Which of the following is NOT a type of fish mentioned in the video?

• Fish with feathered wings

• Jawless fish

• Fish with cartilage skeletons

• Fish with bony skeletons

What sensory abilities are generally well-developed in fish?

• Vision, hearing, and sense of smell

• Taste and touch

• Hearing and taste

• Vision and touch