Biological Classification And System Of Classification Question 66
Question: Which was first photosynthetic organism
[DPMT 2003]
Options:
A) Green algae
B) Red algae
C) Cyanobacteria
D) Brown algae
Show Answer
Answer:
Correct Answer: C
Solution:
Cyanobacteria are the first photosynthetic organisms, that evolved on the earth more than 3.5 billion years ago.
They are the architects of earth’s atmosphere, which was turned oxygenic by these group of primitive photosynthesizers. So, answer is - ‘Cyanobacteria’.
BETA
