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(i) Draw a neat and well-labelled diagra...

(i) Draw a neat and well-labelled diagram of the chloroplast.
(ii) List the events taking place in the photo chemical phase of Photosynthesis.
(iii) If you are planning an experiment to show the effect of light on the photosynthesis :
(1) Will you select white light or green light ? Justify your answer.
(2) Why would you select a destarched plant?

Text Solution

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(i)
(ii) Following events take place in the photo-chemical phase of photosynthesis:
(1) Activation of chlorophyll.
(2) Splitting of water i.e Photolysis.
(3) The hydrogen ions are picked up by a compound NADP to form NADPH,
`NADP + e ^(-) + H ^(+) to NaDPH`
(4) The oxygen component is given out as molecular oxygen.
`2 O _(2) O _(2)`
(5) The electrons are used in converting ADP into energy rich compound ATP by adding one phosphate group `P_(2)`
`ADP + underset(("Inorganic")) ("Phosphate") to ATP`
(iii) (1) We will select white light because chlorophyll molecules will absorb blue and red spectruns in which photosynthesis takes place.
(2) We will select a destarched plant because destarching ensures that any starch present before the experiment is not their and the starch has been formed under experimental conditions only.
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