S5 Listening Bioluminescence

What percentage of animals in the water column emit light?

• 50%

• 60%

• 80%

• 70%

Which of the following is NOT a type of gelatinous zooplankton?

• jellyfish

• siphonophores

• comb jellies

• copepods

What is the typical color of bioluminescence?

• Blue

• Red

• Green

• Violet

How is light emitted in certain animals?

• Through the pouches containing bacteria

• Through lensed structures that look like eyes

• Through the mouth

• Through the skin

• Through tentacles

What is the substrates that are oxidized to create light called?

• luciferase

• photophores

• photocytes

• luciferins

What is the function of the large number of small light organs on the lower surface of many fish, shrimp, and squid?

• To communicate with other animals

• To navigate in the dark

• To hide the silhouette of the animal

• To attract prey

What is the function of the stalked light organs in certain deep-sea fish?

• they lure prey

• they lure potential mates

• they vomit bioluminescent bacteria

• they hide the fish's silhouette

• they attract antioxidants

Under what circumstance does bioluminescence most frequently occur?

• When the animal is hiding

• When the animal is trying to lure a mate

• When the animal is being touched

• When the animal is hunting

Why is bioluminescence nearly nonexistent in freshwater?

• Lack of sufficient time to evolve

• The reason is unknown

• Freshwater cannot support the formation of luciferins

• There are no gelatinous zooplankton in freshwater

Where is bioluminescence most common?

• On coral reefs and near shores

• In the deep ocean

• In freshwater

• On land