Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions? The L-D rea
ctions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma. The L-D reactions occur in the cytoplasm, and the L-IND reactions occur in the chloroplast. The L-D reactions occur in the chloroplast, and the L-IND reactions occur in the mitochondria. The L-D reactions occur in the stroma, and the L-IND reactions occur in the cytoplasm.
The correct answer is option 'The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma'.
The light dependent reaction (LD) occurs in the thalakoid of the chloroplasts. It uses the light energy to carry out the reactions required for the formation of ATP and NADPH molecules.
The light independent reaction of the photosynthesis occurs in the stroma (outside thalakoid) and is responsible for the formation of the glucose molecules from the carbon dioxide. This step does not require presence of light.
Stems of Vascular plants are made of vascular tissues and lignin which gives it is characteristics stiffness and the ability to grow tall to access more light and air.
