The Living World Question 20
Photosynthetic bacteria evolved on earth about 3.5 billion years ago
Options:
A) 3300 to 3500
B) 3000 to 3300
C) 3500 to 3800
D) 3800 to 4000 years ago
Show Answer
Answer:
Correct Answer: B
Solution:
Because in the Archean eon or 3000 to 3300 million years ago, these bacteria were present.
Fossils of Cyanobacterium and photosynthetic bacteria have been found which are 3000 million years old.
BETA
