The evidence that during photosynthesis oxygen comes from waterA. Photosynthesis bacteria employ `H_(2)S` and `CO_(2)` to form carbohydrates, water and sulphurB. Isolated illuminated chloroplasts release oxygen if provided with potassium ferrocyanideC. Isotopic `.^(18)O` provided as `H_(2) .^(18)O` appears as `.^(18)O_(2)` liberated in photosynthesisD. All the above.

The evidence that during photosynthesis oxygen comes from waterA. Phot

1.	The evidence that during photosynthesis oxygen comes from waterA. Photosynthesis bacteria employ `H_(2)S` and `CO_(2)` to form carbohydrates, water and sulphurB. Isolated illuminated chloroplasts release oxygen if provided with potassium ferrocyanideC. Isotopic `.^(18)O` provided as `H_(2) .^(18)O` appears as `.^(18)O_(2)` liberated in photosynthesisD. All the above.
Answer» Correct Answer - D

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Complete girdling ultimately kills the tree due toA. Starvation of rootB. Stoppage of photosynthesisC. Non-movement of mineralsD. Non-movement of water.
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A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis to:(a) Remove starch from the plant(b) Ensure that starch is not translocated from the leaves(c) Remove chlorophyll from the leaf of the plant(d) Remove starch from the experimental leaf
The main difference between chlorophyll ‘a’ and ‘b’ is:(a) Chlorophyll ‘a’ is a linear chain compound and ‘b’ is b ranched chain(b) Chlorophyll ‘a’ has no Mg ion in centre of molecule(c) In chlorophyll ‘a’ there is — CH3 group whereas in ‘b’ it is — CHO group(d) All of the above
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Compensation point means the condition:(a) When the entire food manufactured in photosynthesis remains unutilised(b) When the pot is watered just to meet the full requirement of the plant(c) When rate of photosynthesis is equal to rate of respiration(d) Where there is neither photosynthesis nor respiration.
`ETC` of photosynthesis process isA. Bound to thylakoid membraneB. Present in stromaC. Bound to outer chloroplast membraneD. Dispersed in sytosol.
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