Why Sharks Are Covered In Teeth

The video explores the evolutionary link between shark scales and teeth, highlighting how early vertebrates developed protective armor that evolved into scales and eventually teeth. It discusses the transition from passive filter-feeding to active predation with the development of jaws and teeth, leading to the rise of modern sharks and land vertebrates. The diversification of teeth allowed vertebrates to adapt to various diets, with specialized teeth for herbivores, carnivores, and omnivores, all tracing back to ancestral scales.

What are the tiny rough bumps on shark scales called?

• Dentin

• Scales

• Denticles

• Enamel

What evolutionary advantage did the development of scales provide to early vertebrates?

• Increased speed

• Protection and flexibility

• Enhanced vision

• Ability to fly

How did the evolution of jaws benefit early fish?

• Allowed them to swim faster

• Helped them clamp down on prey

• Enabled them to breathe underwater

• Made them more colorful

Which type of teeth evolved in herbivores to help them process fibrous plants?

• Premolars

• Incisors

• Molars

• Canines

What is the common origin of modern shark scales and human teeth?

• Bone tissue

• Ancestral scales

• Cartilage

• Nerve endings