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- 1. Multiple Choice
_________ showed that sunlight is essential to the plant process that somehow purifies the air fouled by burning candles or breathing animals as demonstrated in the experiment conducted by Joseph Priestley.
Jan Ingenhousz
T.W Engelmann
Julius von Sachs
Blackmann
- 2. Multiple Choice
T.W Engelmann split light into its spectral components using a prism and then illuminated a green alga, _________, placed in a suspension of aerobic bacteria.
Chlamydomonas
Cladophora
Chlorella
Desmids
- 3. Multiple Choice
In _________, enzymatic reactions incorporate CO2 into the plant leading to the synthesis of sugar, which in turn forms starch.
Matrix of mitochondria
Stroma of chloroplast
Intermembrane space of mitochondria
Grana of chloroplast
- 4. Multiple Choice
The former set of reactions in photosynthesis that are directly light driven are called _________.
Biosynthetic phase
Dark reactions
Light reactions
Synthesis phase
- 5. Multiple Choice
A chromatographic separation of the leaf pigments shows that the colour that we see in leaves is not due to a single pigment but due to
Chlorophyll a
Chlorophyll b
Xanthophylls and carotenoids
All the above
- 6. Multiple Choice
Photochemical phase of photosynthesis includes _________.
Light absorption
Water splitting
Oxygen release
All the above
- 7. Multiple Choice
Assertion : Chloroplasts occur inside the leaves mostly in mesophyll cells along their walls.
Reason :The membrane system of chloroplast is responsible for trapping the light energy and also for the synthesis of ATP and NADPH.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
- 8. Multiple Choice
Assertion: The colour of the leaf is due to the presence of four pigments-chlorophyll a, chlorophyll b, xanthophylls and carotenoids.
Reason: Chlorophyll b is the chief pigment associated with photosynthesis.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
- 9. Multiple Choice
Assertion : The stroma lamellae have both PS I and PS II.
Reason :The grana lamellae lack PS II as well as NADP reductase enzyme.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
- 10. Multiple Choice
Assertion : Dark reactions are called biosynthetic phase of photosynthesis.
Reason :Dark reactions do not directly depend on the presence of light but are dependent on the products of the light reaction, i.e. ATP and NADPH.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
- 11. Multiple Choice
Assertion : The first product of CO2 fixation in C3 pathway is OAA.
Reason :The first product of CO2 fixation in C4 pathway in PGA.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
- 12. Multiple Choice
Assertion : Photorespiration is a wasteful process.
Reason :In photorespiratory pathway, there is no synthesis of sugars or ATP.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
- 13. Multiple Choice
Read the following statements and select the correct option.
Statement 1 :In photosynthesis, during ATP synthesis, protons accumulate in the lumen of thylakoid.
Statement 2 :In respiration, during ATP synthesis, protons accumulate in the inter membranal space of mitochondria.
Both statements 1 and 2 are correct.
Statement 1 is correct but statement 2 is incorrect.
Statement 1 is incorrect but statement 2 is correct.
Both statements 1 and 2 are incorrect
- 14. Multiple Choice
Select the incorrect pair.
2-carbon compound – Aspartic acid
3-carbon compound – PGA
4- carbon compound – Malic acid
5-carbon compound - RuBP
- 15. Multiple Choice
How many ATP and NADPH2 are respectively produced in the process of photorespiration?
2 and 4
1 and 2
4 and 6
0 and 0
- 16. Multiple Choice
The energy to cause a conformational change in F1 particle of ATPase comes directly from
ATP
breakdown of the proton gradient
break down of electron gradient
PSI
- 17. Multiple Choice
The excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the ETC in
Stroma lamellae
Granal membrane only
Thylakoid lumen
Matrix
- 18. Multiple Choice
Fo part of ATPase forms a transmembrane channel that carries out
Active diffusion of protons
Active diffusion of ATP
Facilitated diffusion of H+
Facilitated diffusion of H+ and e–
- 19. Multiple Choice
Moll’s half-leaf experiment proves that _______ is essential for photosynthesis to take place.
chlorophyll
CO2
light
H2O
- 20. Multiple Choice
The source of O2 liberated in photosynthesis in green plants is
Photosynthetic enzyme
Carbohydrate present in leaf
Water
Carbon dioxide
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