Q. Lichens are composite organisms consisting of a fungus and a photosynthetic partner (algae), growing together in a symbiotic relationship Consider the following statements about lichens I. Lichen are very good air pollution indicators II. Algal partner and fungal partner live mutually III. Algae prepares food for fungi IV. Fungi provides shelter and absorbs water and minerals for algal partner Which of the statements given above are correct?
A) I, II and III
B) II, III and IV
C) I, II and IV
D) I, II, III and IV
Explanation
A lichen is structurally organised entity consisting of the permanent association of a fungus and an alga. Algae prepare food for fungi. Fungi provides shelter and absorbs water and minerals for algal partner. Lichens are very sensitive to air pollution, particularly to $SO_{2}$ concentration in the atmosphere. They die at higher levels of $SO_{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.