Home
Class 11
BIOLOGY
Cyanobacteria helped in raising level of...

Cyanobacteria helped in raising level of free oxygen in Atmosphere. Do you agree?

Text Solution

Verified by Experts

1. Yes. The stramolite deposits are formed when colonies of cyanobacteria bind with calcium carbonate. (2. 7 billion years old).
2. Their abundance in fossil records proves that they have helped to raise level of free oxygen in the atmosphere.
Promotional Banner

Similar Questions

Explore conceptually related problems

How do cyanobacteria help as biofertilizer ?

Bacterial cells can prepare food. Do you agree?

If one of the sides and any other part (either an acute angle or any side) of a right angle triangle is known, the remaining sides and angles of the triangle can be determined. Do you agree? Explain with an example.

Assertion (A) : Cyanobacteria are photosynthetic blue green algae which produce oxygen. Reason (R) : Cyanobacteria played a key role in the changes of atmospheric oxygen levels from So anaerobic to acerobic during the geologic periods.

Plants show Hunger signs ? Do you agree ?

Every simple harmonic motion is periodic motion but me every periodic motion need not be simple harmonic motion. Do you agree? Give example.

A tree is believed to be releasing oxygen during night time. Do you believe the truthfulness of this statement?

A complete virus particle is only capable of infection. Do you agree?

The earth moving around the sun in a circular orbit is acted upon by a force and hence work must be done on the earth. Do you agree with this statement?