Protista, Porifera, Cnidaria: Features · Zoology

The symbiotic algae found in the tissues of many corals, providing them with nutrients via photosynthesis, are called:

  1. Cyanobacteria
  2. Zooxanthellae
  3. Spirogyra
  4. Diatoms
Show answer and explanation

Correct answer: Zooxanthellae

Zooxanthellae are endosymbiotic dinoflagellates. They provide organic carbon to the coral host, while the coral provides the algae with nitrogen, phosphorus, and a protected environment.

Difficulty: Medium Question 19 of 20

Practice all 20 Protista, Porifera, Cnidaria: Features questions

Keep practicing

More Protista, Porifera, Cnidaria: Features questions