Stromatolites are layered structures produced by the activity of ____________.

A)dinosaurs
B)methanogens
C)cyanobacteria
D)green algae

Question

Stromatolites are layered structures produced by the activity of ____________.

A)dinosaurs 
B)methanogens 
C)cyanobacteria 
D)green algae

Quizplus · Accepted Answer

Stromatolites are primarily produced by the activity of cyanobacteria, which are photosynthetic bacteria commonly found in shallow, warm waters. They form layers of sedimentary rock by trapping sediment particles and calcium carbonate within their sticky, slimy mats. This process can continue for thousands of years, resulting in the formation of large, dome-shaped mounds or columns that can reach several meters in height. While green algae and other microorganisms can also contribute to stromatolite formation, cyanobacteria are the most important and well-studied contributors. Dinosaurs, on the other hand, are not involved in stromatolite formation at all, while methanogens are a type of archaea that produce methane and are found in a variety of environments, but are not directly involved in stromatolites.

Stromatolites Are Layered Structures Produced by the Activity of ____________