Answer:
The correct answer will be option-B
Explanation:
Stromatolites are the sedimentary deposited mounds made of layers of phototrophic microbes which were usually present in the primordial times. The stromatolites are one of the oldest fossils is known today which were formed in the shallow water.
They are composed of the phototrophic bacteria or cyanobacteria which survived and still survive by using the carbon dioxide and sunlight to make food material.
Since the bacteria are the prokaryotic organism therefore, the Option-B is the correct answer.
2. Each trait is defined by two alleles. Each allele can either be dominant or recessive ( TT or tt or Tt)
6CO2 + 6H20 -> C6H12O6 + 602
Carbon Dioxide + Water = Glucose + Water
Carbon Dioxide is an input of Photosynthesis which is a process mainly plants use to make their own 'food' (organic compounds).
Carbon is removed from the atmosphere and put into food through PHOTOSYNTHESIS :)