Question

What is biosynthetic phase in photosynthesis

Answer 1

Answer:

The phase in which synthesis of organic substances take place is called biosynthetic phase. It's another name of dark reaction.

Explanation:

Products of light reaction: ATP, NADPH, CO2and H2O. The next phase of photosynthesis after light reaction  is the biosynthetic phase. In this, ATP and NADPH are used for synthesizing the food.

CO2 is fixed to form CO2 fixation product.This stage is also called the dark phase as it is independent of light, but deals with the products of light reaction. The reaction involved in the biosynthetic phase takes place in the stroma of chloroplasts.

In some plants, the first product of CO2fixation is a 3-carbon compound called 3-phosphoglyceric acid (PGA). These plants are said to adopt the C3 pathway.

In other plants, the first CO2 fixation product is a 4-carbon compound called oxaloacetic acid. These plants are said to adopt the C4pathway.

Answer 2

Answer:

biosyntheitc phase is another term for light independent or dark phase of photosynthesis.

The reactions here are not dependent on light.

Also may occur simultaneously with the light reaction.

The conversion of glucose to starch and other chemicals takes place here.