In which photosynthetic reaction is co2 reduced to form a carbohydrate?
a. light dependent
b. light independent
c. fermentation
d. krebs cycle

b. Light independent

Explanation: Photosynthesis is a process where carbohydrtes are formed with energy from the sunlight, in cianobacteria, algae and plants. This process has two steps:

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation:

option c is the correct answer.