Shark Biology and Ecology

Sharks are ancient fish with unique anatomical features like cartilage skeletons and multiple gill slits. They have diverse species with various adaptations, making them skilled predators. Sharks possess special senses, such as electroreceptors, and have skin that feels like sandpaper due to placoid scales. Their teeth are continuously replaced, and they play a crucial role in marine ecosystems. Despite their fearsome reputation, shark attacks on humans are rare.

What material makes up a shark's skeleton?

• Bone

• Cartilage

• Calcium

• Keratin

Which shark is known as the largest fish in the world?

• Great White Shark

• Hammerhead Shark

• Whale Shark

• Tiger Shark

What is the main advantage of a shark's torpedo-shaped body?

• Camouflage

• Speed

• Flexibility

• Strength

How many different living shark species have been discovered?

• Over 100

• Over 200

• Over 300

• Over 400

What is the primary function of a shark's electroreceptors?

• Sensing temperature changes

• Hearing sounds

• Smelling prey

• Detecting light

What is the role of the reflective layer in a shark's eyes?

• Increasing focus

• Reducing glare

• Enhancing color perception

• Improving night vision

What is the texture of shark skin similar to?

• Velvet

• Leather

• Sandpaper

• Silk

How many teeth can some sharks go through in their lifetime?

• 50,000

• 100,000

• 20,000

• 10,000

What is the unique reflex called that occurs when sharks are flipped upside down?

• Static Reflex

• Hypnotic State

• Inertial Pause

• Tonic Immobility

What is the primary role of sharks in the ocean ecosystem?

• Predators

• Scavengers

• Decomposers

• Pollinators