The figure given below shows the effect of light intensity on the rate of photosynthesis.

Based on the graph, answer the following questions.
(a) Give two reasons, why there is no increase in the rate of photosynthesis, beyond light intensity at D.
(b) Mention any two factors that could be limiting at point A.

Fill in the blanks (A), (B), (C), (D), (E) and (F) in the following flow-chart, representing the Hatch-Slack pathway.

A diagrammatic representation of the Hatch and Slack .pathway of photosynthesis is shown above.
(a) Name the processes A; Band C.
(b) Write the name of:
(i) X
(ii) Y
(iii) Z.

A schematic representation of the Calvin cycle of photosynthesis is given above.
Name the processes A, Band C and mention what happens during each of them.

Observe the flow-chart given below and answer the questions that follow.

(a) Name the parts labelled A, B, C, and D.
(b) Which type of phosphorylation is possible in this?
(c) Name the exact site where this process occurs in the chloroplast.

\(2 \mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{H}^{+}+\mathrm{O}_{2}+4 \mathrm{e}^{-}\) 
Based on the above equation, answer the following questions.
(a) Name the process, the equation represents.
(b) Mention the fate of each of the products formed.
(c) Where does this process occur in the chloroplast?

A diagrammatic representation of a Light Harvesting Complex (LHC) is shown in the figure given above. Answer the following questions.
(a) How do the antennae pigments help to make photosynthesis more efficient?
(b) Name the pigment that forms the reaction centre.
(c) Name the reaction centre of photosystem I and photosystem II.

In the following figure, the curve A represents the rate of photosynthesis while the curve B represents the absorption spectrum of chlorophyll-a. Observe the graph and answer the questions that follow:

(a) What is absorption spectrum?
(b) Where in the visible spectrum of light, is there maximum photosynthesis?
(c) How is the rate of photosynthesis measured for plotting action spectrum?

If you look at plants, there are so many shades of green in their leaves, even on the same plant. When you separate the leaf pigments through paper chromatography, you find that the colour of the leaves is not due to a single pigment, but due to four different pigments.
(a) What is a pigment?
(b) Name the four different pigments found in leaves.
(c) Can you guess, which is the most abundant leaf pigment in the world?

Study the figure given below and answer the questions that follow:

(a) Name the cells where it is present abundantly.
(b) Name the process of photosynthesis that occurs in the parts labelled 1 and 2.
(c) Name the products formed at 2, that are used in the process at 1.
(d) Name the first stable product formed in the process at 1.

Observe the experimental setup and answer the following questions.
(a) Name the scientist who conducted this experiment.
(b) What did he conclude from this experiment?
(c) Name the scientist who showed that
(i) light is necessary for photosynthesis.
(ii) glucose is made in those parts of a plant that are green.