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Even though a very few cells in a C(4) ...

Even though a very few cells in a `C_(4)` plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Can you discuss why?

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In `C_(4)` plants `CO_(2)` fixation occur in two types of cells, mesophyll and bundle sheath cells so they are highly productive.
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By looking at a plant externally can you tell whether a plant is C_(3) or C_(4) ? Why and how?

Olefins can be halogenated in the allylic position by number of reagents of which N-bromo succinimide (NBS) is the most common. When this reagent is used the reaction is known as WohlZiegler bromination. Other N-bromoamides have also been used. To a much lesser extent allylic chlorination has been carried out with N-chloro-succinimide. N-Chloro-N-cyclohexyl benzene sulphonamide or t-hypochlorite when the allylic radical intermediate is unsymmetrical allylic rearrangement takes place so that the mixture of both possible products is obtained. CH_3 - CH_2 -CH = CH_2underset(hv)overset(NBS)(to) CH_3 - CH = CH - CH_2 - Br + CH_3 - undersetoverset(|)(Br)(C ) - CH = CH_2 NBS is also a highly regioselective brominating agent at other positions, including positions a to a carbonyl group.

Olefins can be halogenated in the allylic position by number of reagents of which N-bromo succinimide (NBS) is the most common. When this reagent is used the reaction is known as WohlZiegler bromination. Other N-bromoamides have also been used. To a much lesser extent allylic chlorination has been carried out with N-chloro-succinimide. N-Chloro-N-cyclohexyl benzene sulphonamide or t-hypochlorite when the allylic radical intermediate is unsymmetrical allylic rearrangement takes place so that the mixture of both possible products is obtained. CH_3 - CH_2 -CH = CH_2underset(hv)overset(NBS)(to) CH_3 - CH = CH - CH_2 - Br + CH_3 - undersetoverset(|)(Br)(C ) - CH = CH_2 NBS is also a highly regioselective brominating agent at other positions, including positions a to a carbonyl group.

Olefins can be halogenated in the allylic position by number of reagents of which N-bromo succinimide (NBS) is the most common. When this reagent is used the reaction is known as WohlZiegler bromination. Other N-bromoamides have also been used. To a much lesser extent allylic chlorination has been carried out with N-chloro-succinimide. N-Chloro-N-cyclohexyl benzene sulphonamide or t-hypochlorite when the allylic radical intermediate is unsymmetrical allylic rearrangement takes place so that the mixture of both possible products is obtained. CH_3 - CH_2 -CH = CH_2underset(hv)overset(NBS)(to) CH_3 - CH = CH - CH_2 - Br + CH_3 - undersetoverset(|)(Br)(C ) - CH = CH_2 NBS is also a highly regioselective brominating agent at other positions, including positions a to a carbonyl group. Which of the following is allylic chlorinating agent ?

RUB is CO is an enzyme that acts as both as a carboxylase and oxygenase. Why do you think RUB is CO carries out more carboxylation in C_(4) plants ?

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-PHOTOSYNTHESIS IN HIGHER PLANTS -EXERCISES
  1. By looking at a plant externally can you tell whether a plant is C(3) ...

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  2. By looking at a plant externally can you tell whether a plant is C(3) ...

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  3. Even though a very few cells in a C(4) plant carry out the biosynthet...

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  4. RUB is CO is an enzyme that acts as both as a carboxylase and oxygenas...

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  5. Suppose there were plants that had a high concentration of chlorophyll...

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  6. Why is the colour of a leaf kept in the dark frequently yellow or pale...

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  7. Why was the plant kept in dark and then in sunlight ?

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  8. Figure shows the effect of light on the rate of photosynthesis. Based ...

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  9. Give comparison between the following : a. C(3) and C(4) pathways ...

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  10. Cyanobacteria and some other photosynthetic bacteria do not have chlor...

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  11. Why photorespiration does not occur in C(4) plants ?

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  12. The orange colour of carrot root is due to the presence of

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  13. What is the reason to keep a plant in dark for 48 hours to conduct exp...

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  14. Photosynthetic organisms occur at different depths in oceam. Do they r...

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  15. Look at the acivities listed below. Reason out whether or not, work is...

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  16. The matrix of both chloroplast and mitochondria are similar in having

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  17. Write some of the events that occur in the chloroplasts during photosy...

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  18. Which of the following statements about absorption spectrum is correct...

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