Question

which phase is called biosynthetic phase why​

Answer 1

Answer:

The dark reaction is also called biosynthetic phase because it involves the synthesis of food (organic compound glucose) from simple inorganic substances. It uses the products of light reaction (ATPs and NADPH) to reduce CO2 into carbohydrate (glucose).

Answer 2

Answer:

S-phase( assuming that you are asking it in terms of cell division cycle).