UPSC Prelims GS - 2021

Question 30
DIFFICULTCorrect: +2Incorrect: -2

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.

    a
    1 and 2 only
    b
    2 and 3 only
    c
    1 and 3 only
    d
    1, 2 and 3