Coral animals
A)are a diverse group of cnidarians often forming mutualistic symbiotic relationships with dinoflagellate algae.
B)are predominantly photosynthetic, multicellular algae.
C)can tolerate low oxygen and nutrient levels, and varying levels of salinity.
D)can only survive in tropical waters 30oC and above.
E)build coral reefs by glueing sand particles together.

Question

Quizplus · Accepted Answer

Coral animals are cnidarians that form mutualistic symbiotic relationships with dinoflagellate algae, which provide them with nutrients through photosynthesis. This is a key aspect of their biology and ecology.

Answer: C)
 Coral animals are often found in environments with low oxygen and nutrient levels, and they can tolerate varying levels of salinity. This is because they have adapted to live in these challenging conditions.

Coral Animals