Q. Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ?
A) $Bacillus$
B) $Pseudomonas$
C) Mycoplasma
D) $Nostoc$
Explanation
[Solution] Mycoplasma are the smallest known living cells, lack a cell wall, are pathogenic and can survive without oxygen. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.