Question

30. (i) Define Photosynthesis and give a generalized balanced equation for photosynthesis.
(ii) Describe Calvin cycle in four steps. Or express Calvin cycle by a diagram. ​

Answer 1

Answer:

Answer:i) The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen. ... In most plants, water is supplied from the roots, with the leaves collecting carbon dioxide via the stomata and sunlight captured by the chloroplasts in the leaves.

Answer 2

Answer:

Explanation:

1.)Photosynthesis is the process of converting the energy in which solar energy is converted into the form of light which is used in the production of carbohydrate molecules.

Solved Example

Sol:

The balanced reaction for photosynthesis in word form is

Carbon dioxide + Water → Glucose  + oxygen.

The balanced reaction for photosynthesis in symbol form is

6CO2 + 6H2O  → C6H12O6 + 6O2 + 6H2O

2.)

Key Points on C3 Cycle

   1.C3 cycle refers to the dark reaction of photosynthesis.

2.   It is indirectly dependent on light and the essential energy carriers are products of light-dependent reactions.

  3. In the first stage of Calvin cycle, the light-independent reactions are initiated and carbon dioxide is fixed.

4.    In the second stage of C3 cycle, ATP and NADPH reduce 3PGA to G3P. ATP and NADPH are then converted into ATP and NADP+.

   In the last stage, RuBP is regenerated. This helps in more carbon dioxide fixation.