State the functions of the following:
Grana of chloroplast is not the:
Topic: Functions of the grana
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
(a) Site of Light Independent Phase.
READ THE WORD "NOT" — this is a negative question, so you are looking for the ONE option that is FALSE.
The GRANA hold the chlorophyll and are the site of the LIGHT DEPENDENT phase — so they ARE the site of photon absorption (d), of photolysis (c), and of the light dependent phase (b). All three are TRUE and therefore all three are wrong answers.
The LIGHT INDEPENDENT phase (the dark reaction, or Calvin cycle) takes place in the STROMA, the fluid matrix surrounding the grana, which holds the enzymes that fix carbon dioxide into glucose. So (a) is the false statement and the correct answer.
THE DIVISION OF LABOUR inside one organelle: GRANA — LIGHT reaction; chlorophyll, photolysis, ATP and NADPH₂ made STROMA — DARK reaction; carbon dioxide fixed into glucose
In a negative question, test each option for TRUTH and pick the odd one. Answering by reflex here gives (b), which is true and therefore wrong.
Site of Light Independent Phase.