Q. Which is not correct for ancient plants?
A) They have photosynthetic pigment
B) They are primitive algae
C) They use $H_{2}S$ as hydrogen source
D) They release oxygen as byproduct
Explanation
Ancient plants were like cyanobacteria. These plants used hydrogen source other than water and, therefore, did not release oxygen from photolysis of water.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.