UPSC Prelims 2021 · Question 30 of 97
UPSC Prelims 2021 question on Symbiotic Relationships
- ExamUPSC CSE
- Year2021
- PaperGeneral Studies Paper I
- SubjectEnvironment and Ecology
- TopicEcology and Ecosystem
- DifficultyMedium
- TypeStatement
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.
Show answer
Answer: D. 1, 2 and 3
Verdict
Correct statements: 1, 2 and 3 → Option (d).
Statement by statement
Statement 1 – CORRECT: Cnidarian, also called coelenterate, are mostly marine animals. They include the corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans. The relationship between cnidarians and dinoflagellate algae is termed as "symbiotic", because both the animal host and the algae are benefiting from the association. It is a mutualistic interaction.
Statement 2 – CORRECT: Fungi have several mutualistic relationships with other organisms. In mutualism, both organisms benefit from the relationship. Two common mutualistic relationships involving fungi are mycorrhiza and lichen.
Statement 3 – CORRECT: Termites have a mutualistic relationship with protozoa that live in the insect's gut. The termite benefits from the ability of bacterial symbionts within the protozoa to digest cellulose.
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