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Assertion. Under conditions of high inte...

Assertion. Under conditions of high intensity and limited `CO_(2)` supply, photorespiration has a useful role in proteching the plants from photo-oxidative damage.
Reason. If enough `CO_(2)` is not available to utilise light energy for carboxylation to proceed, the excess energy may not cause damage to plants

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Assertion (A) Under condition of high light intensity and limited CO_(2) supply, photorespiration has a useful role in protecting the plants from photooxidative damage. Reason (R ) If enough CO_(2) is not available to utilize light energy for carboxylation to proceed , the excess energy may not cause damage to plants.

Assertion: Presence of photorespiration is considered as a wasteful and energy consuming process in crop plants, ultimately leads to reduction in yield. Reason: During C_(3) synthesis upto 50% CO_(2) fixed may have to pass through photorespiratory process to form carbohydrate such as sucrose.

Assertion : The role of chlorophyll in photosynthesis is absorption of light and photolysis of water. Reason : The function of solar energy is assimilation of CO_2

Assertion :- In the tissue high P_(O_(2)) , low P_(CO_(2)) , higher H^(o+) concentration conditions are favourable for dissociation of oxygen from the oxyhaemoglobin. Reason :- Every 100ml of oxygenated blood can deliver around 5ml of O_(2) to the tissues under normal physiological conditions.

Assertion: Photosynthesis in plants involves reaction of CO_(2) and H_(2)O in presence of light and cholrophyll. Reason: It is chlorophyll which absorbs light and passes this energy to reactant molecules.

A2Z-PHOTOSYNTHESIS IN HIGHER PLANTS-SECTION C : Previous Years' Examination Questions (Assertion -Reason Type Questions)
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  3. Assertion : Cyclis pathway of photosythesis first apperead in some eub...

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  4. Asserotion: C(4) photosynthetic pathway is more efficient than the C(3...

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  5. Assertion. The atmospheric concentration of CO(2) at which photosynthe...

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  7. Assertion. Photosynthetically C(4) plants are less efficient than C(3)...

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  8. Assertion: Dark reaction is purely enzymatic reaction. Reason: It oc...

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  9. Assertion: Dark reaction occurs only at night in the stroma of chlorop...

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  11. Assertion: D.C.M.U. is a photosynthetic inhibitor. Reason: D.C.M.U. ...

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  12. Assertion : The stromal thylakoids are rich in both PS I and PS II R...

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  13. Assertion : Cyclis pathway of photosythesis first apperead in some eub...

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  14. Assertion : Each molecule of ribulose-1 ,5 biphosphate fixes one molec...

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  15. Assertion. In light reaction of photosynthesis, light is required for ...

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  16. Assertion : CAM plants lack structural compartmentation of leaf, as fo...

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