Question
Differentiate between:
Photolysis and Photophosphorylation.

Answer

 PhotolysisPhotophosphorylation
 It is splitting of water in the   presence of sunlight. It is a process of formation of energy-rich compound ATP
 from ADP and inorganic phosphate utilising light energy.
 It involves following reactions :
 $\begin{array}{l}4 H _2 O \longrightarrow 4 H ^{+}+4( OH )^{-} \\ 4( OH ) \longrightarrow\end{array}$
 It involves following reaction :
 $ADP + Pi \longrightarrow ATP$
 Oxygen liberated is released in   the atmosphere. ATP acts as assimilatory powers to provide energy for dark   reaction.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A potted destarched plant was taken in order to prove that light is necessary for photosynthesis.
(i) What is meant by 'destarched plant'? How can it be destarched?
(ii) Using the destarched plant describe step by step how you would proceed to prove that in the absence of light the leaf cannot manufacture starch.
Photosynthesis in green plants is directly and indirectly dependent on so many plant structures.
Explain briefly the role of the following structures in this process is Xylem tissue in the leaf veins
Mention characteristic features of mitosis.
Given below is the diagram of the human ear. Study the same and answer the questions that follow:

Image
(i) Give the biological term for the part labelled 'A' and state its function.
(ii) Name the part labelled 'B' and state its function.
(iii) Name the part labelled ' $C$ ' and state its function.
The figure given below is for performing an experiment on photosynthesis.

Answer the following:
(i) What is the aim of this experiment?
(ii) Describe an experiment to show that light is necessary for photosynthesis.
(iii) What do you conclude from this experiment?
(iv) What is the role of light in photosynthesis?
The sketch below shows a certain condition in an individual:

(i) Name the condition.
(ii) What is the underlying cause of this condition?
(iii) Name two other conditions that could have resulted due to a similar cause.
(iv) Which hormone is required for iodine synthesis?
(v) Where is the thyroid gland located?
(vi) The hormone secreted by the thyroid gland is controlled from which hormone?
List some adaptations found in desert plants to reduce transpiration.
Given below is a diagram of a smear of human blood. Study the same and answer the question that follow:
What is the main function of the parts labeled 1, 2 and 3 respectively?
The figure below represents the vertical section of a leaf:

(i) Name the parts labeled 1 to 5.
(ii) What do the two arrows (dotted and solid) indicate in the day time and at night?
(iii) Could you add one more arrow in the figure? If yes, what for?
(iv) How many leaf veins have been shown in this section?
Label the following diagram :