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Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 4 (25 MCQs)

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1. What gives plants their green color?
2. Why gives the different leaf colors in the fall?
3. Study the following statements regarding chl a molecule. (i) Molecular formula of chl a is C55H72O5N4Mg. (ii) It is the primary photosynthesis pigments. (iii) In pure state, it is red in colour and thus it absorbs more blue wave lengths of light than the red wavelength. (iv) It is soluble in water as well as petroleum ether. Which of the above statements is/are not correct?
4. Which of the following correct about photosynthesis?
5. Which pigment molecule forms the reaction centre in both photosystems?
6. Plant cells use sunlight to make their own food. Which structure allows plant cells to perform this function?
7. Who, after conducting experiments on purple and green sulphur bacteria, inferred that O2 evolved during photosynthesis comes from H2O not from CO2?
8. What is the gas we breath out that plants use for photosynthesis?
9. ..... is a stack of thylakoids
10. What is the main method used to separate the leaf pigments of any green plant?
11. Stromal lamellae lack-
12. If green plant cells are incubated with O18-labelled CO2, what molecule will become radioactive as the cells are exposed to light?
13. Which of the following is not a product of light reaction of photosynthesis?
14. Where do the light-dependent reactions occur?
15. Which part of the plant cell transforms light into glucose to use as food?
16. What pigment absorbs sunlight for photosynthesis?
17. Where does carbon dioxide and oxygen enter the leaf?
18. Where do the reactions of photosynthesis take place in autotrophs?
19. The raw materials or reactants of photosynthesis are
20. The first stage of photosynthesis captures energy from the ..... to break down water molecules
21. Z scheme show the transfer of electrons involving
22. What would happen to a plant if it can't undergo any photosynthesis?
23. Which process is considered to be a part of the carbon cycle?
24. All the reaction from the reduction of CO2 to the formation of sugar are included in
25. What provides the energy needed for photosynthesis?
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