Q. A teacher was explaining about a constant physical contact involving almost equal physiological interdependence in two different thalloid forms. He was trying to explain

A) Mycorrhizal association
B) Establishment of heterothallism
C) Operation of heterothallism
D) Advent of lichen formation
Explanation

Lichen is a symbiotic relationship between algae (phycobiont) and fungi (mycobiont). Both the partners are in a constant physical contact and have almost equal physiological interdependence. The fungal partner takes part in reproduction, and protection while algae synthesize food through photosynthesis.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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