A) In lichens, the algal components is called phycobiont and fungal component is known as mycobiont, which are heterotrophic and autotrophic respectively
B) Viroid contains RNA of low molecular weight and protein coat
C) A virus contains both RNA and DNA
D) Viruses are obligatory parasites
Explanation
Viruses are obligate intracellular parasites. They are intermediates between living and non-living entities.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.