$DCMU$ ($3$-($3$,$4$-dichlorophenyl)$-1,1-$dimethylurea) is a chemical that acts as an inhibitor of photosynthesis. What is its specific mode of action?

Which of the chlorophyll types ejects the electron during photophosphorylation?

Light is necessary during photosynthesis for

Which photosystem is involved in cyclic photophosphorylation?

Which is not true regarding cyclic electron transfer system $(ETS)$ in the thylakoid membrane of higher plants?

Identify the correct statements regarding chemiosmotic hypothesis :
$(a)$ Splitting of the water molecule takes place on the inner side of the membrane.
$(b)$ Protons accumulate within the lumen of the thylakoids.
$(c)$ Primary acceptor of electron transfers the electrons to an electron carrier.
$(d)$ $NADP$ reductase enzyme is located on the stroma side of the membrane.
$(e)$ Protons increase in number in stroma.
Choose the correct answer from the options given below: