Marine Ecosystem and Cartilaginous Fish Quiz

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

• To dominate the seabed

• To maintain balance in the open ocean

• To filter plankton from the water

• To dig for shellfish

How do rays differ anatomically from sharks?

• Rays have a shorter tail

• Rays have a flattened body with broad wings

• Rays have a dorsal fin

• Rays have a more streamlined body

What adaptation helps rays prevent their gills from getting clogged with sediment?

• Spiracles behind the eyes

• Their broad wings

• Their long tail

• Their sandpaper-like skin

Which species of rays are known for their ambush predator strategy?

• Eagle rays

• Manta rays

• Devil rays

• Skates

What is the primary feeding method of manta rays?

• Digging for invertebrates

• Hunting in schools

• Filter feeding on plankton

• Ambush predation

What unique behavior is observed in devil rays?

• Jumping out of the water

• Burying themselves in sediment

• Laying eggs in hydrothermal vents

• Using electrical receptors to hunt

What is the purpose of devil rays jumping out of the water?

• To cool down

• To attract a mate

• To escape predators

• To catch flying insects

Where do deep-sea skates lay their eggs?

• In coral reefs

• In hydrothermal vents

• On sandy beaches

• In mangrove forests

What is a unique feature of ghost sharks?

• They have a flattened body like rays

• They are filter feeders

• They have an elongated body like sharks

• They live in shallow waters

How do skates and rays contribute to the biodiversity of sea-floor sediment communities?

• By laying eggs in coral reefs

• By hunting in the open ocean

• By causing bioturbation

• By forming schools