UPSC Previous Year Question | Prelims GS | 2021

Which of the following have species that can establish symbiotic relationship with other organisms? 1. Cnidarians 2. Fungi 3. Protozoa Select the correct answer using the code given below.

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

Answer

Correct Answer

1, 2 and 3

Explanation

Cnidarians (e.g., reef-building corals with zooxanthellae), fungi (mycorrhizae, lichens) and protozoa (e.g., flagellates in termite guts) all include species that live in symbiotic associations with other organisms.

Topics: ecology, environment, fungi and protozoa, species interactions, symbiosis in cnidarians