When photon of light energy falls on chlorophyll molecule, one of the electron pairs form ground or singlet state passes into higher energy level called excited singlet state.

What is the sequence of events in photosynthesis?

The three events that occur during the process of photosynthesis are: (i) Absorption of light energy by chlorophyll. (ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (iii) Reduction of carbon dioxide to carbohydrates.

Which of the event does not occur in photosynthesis?

Oxygen is released from the water molecules. Oxidation of carbon to carbon dioxide does not take place. Conversion of light energy to chemical energy takes place. Hence option (c) is the correct answer.

What happened during the light phase of photosynthesis?

During the light-dependent stage (“light” reactions), chlorophyll absorbs light energy, which excites some electrons in the pigment molecules to higher energy levels; these leave the chlorophyll and pass along a series of molecules, generating formation of NADPH (an enzyme) and high-energy ATP molecules.

What is the site of photosynthesis?

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Which of the following events do not occur in light reaction?

Photolysis of the water takes place and the reduction of CO2 takes place as well. The conversion of Solar energy into chemical energy is also correct. The most probable incorrect statement in this case is absorption of solar energy. Answer is C.

In which event of photosynthesis light is not essential?

The light-independent reactions take place in the dark phase, which is also called the Calvin cycle.

What is the first step of light reactions?

During the first stage, the energy from sunlight is absorbed by the chloroplast. Water is used, and oxygen is produced during this part of the process. During the second stage, carbon dioxide is used, and glucose is produced.

What are the two phases of photosynthesis?

Within the chloroplasts of a plant cell, photosynthesis occurs in two main phases: the light-dependent and light-independent reactions.

What is the first product of C4 cycle?

C4 plants are so called because the first product of CO2 fixation is a C4 organic acid, oxaloacetate, formed by the carboxylation of phosphoenolpyruvate (PEP) by PEP carboxylase.

What is the site of photosynthesis quizlet?

Photosynthesis occurs in the chloroplast. What are chloroplasts and where are they found? Chloroplast is an organelle found in the leaves of green plants. They are found in a plant cell.

Which are the site of these phase in chloroplast?

In eukaryotes, it occurs in the thylakoid membrane of the chloroplast. In eukaryotes, the dark reaction happens in the stroma of the chloroplast.

Which of the following events occur in the light reactions of photosynthesis?

The events occurring in the light reaction of the photosynthesis are: Absorption of sunlight by the chlorophyll and release of the electron to the carriers. Photolysis of water to provide the electron to the chlorophyll. The release of molecular oxygen due to the photolysis of water.

Which of the following event in the photosynthesis is independent of light?

The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers ( ATP and NADPH) are products of light-dependent reactions.

Which one of the following events occurs in dark phase of photosynthesis?

Synthesis of PGA/PGAL.