Which of the following statement is incorrect?
1. Oxygen is released from water.
2. Photosynthesis is a single step reaction.
3. Action spectrum of photosynthesis resembles roughly the absorption spectra of chlorophyll a and b.
4. In plants glucose is stored as starch.
Which of the following is present in membrane of stroma lamellae?
1. NADP reductase
2. PS-I
3. PS-II
4. water splitting complex.
The correct equation, representing the overall process of photosynthesis is –
1. 6CO2 + 6H2O → C6H12O6 + 6H2O + 6O2
2. 6CO2 + 6H2O → C6H12O6 + 6O2
3. 6CO2 + 12H2O → C6H12O6 + 6O2 + 6H2O
4. 6CO2 + 12H2O → C6H12O6 + 6O2 + H2O
Column I | Column II |
i. grana | a. dark reaction |
ii. Stroma | b. light reaction |
c. synthesis of ATP and NADPH+H+ | |
d. synthesis of sugar |
1. i-b, c; ii-a, d.
2. i-a, d; ii-b, c.
3. i-b, d; ii-a,c.
4. i-b; ii-a, c, d.
The _____________ in the leaves have a large number of_________, which align themselves along the walls of the ____________, such that they get the __________quantity of the incident light.
1. chloroplasts, chlorophyll, chloroplasts, optimum.
2. mesophyll cells, chlorophyll, mesophyll cells, optimum.
3. mesophyll cells, chloroplasts, mesophyll cells, optimum.
4. mesophyll cells, chloroplasts, mesophyll cells, minimum.
Identify i, ii, iii and iv labellings in the following diagram :
i | ii | iii | iv | |
1. | stroma lamella | thylakoid | stroma | genetic material |
2. | stroma lamella | grana | stroma | starch granule |
3. | grana | lamella | stroma | starch granule |
4. | stroma lamella | grana | cytoplasm | starch granule |
All the following regarding the role of xanthophylls and carotenoids in photosynthesis are correct except:
1. | They act as accessory pigments |
2. | Their peak absorption is in blue and red regions of VIBGYOR |
3. | They enable a wider range of wavelength of incoming light to be utilized for photosynthesis |
4. | They protect chlorophyll a form of photo-oxidation. |
Dark reaction in photosynthesis is called so because
1. It can occur in dark also
2. It does not depend directly on light energy
3. It cannot occur during day light
4. It occurs more rapidly at night