Question

Ceratium fusus is a protist that is found primarily in coastal waters, especially around the coast of the United Kingdom. These organisms are unique because they can undergo a special chemical reaction at night that helps defend them against predators. It provides defense by attracting larger predators that prey on the organisms that eat Ceratium fusus. Which characteristic of Ceratium fusus is being described?
photosynthesis
glass-like cell walls
bioluminescence
chitin cell walls

Answer 1

Bioluminescence — Ceratium fusus (a dinoflagellate) produces light at night to attract larger predators that eat its grazers, providing indirect defense.