Q. No.
The half-leaf experiment, where a part of the leaf is enclosed in a test tube containing some KOH soaked cotton was performed, which showed that _________ was required for photosynthesis?
a. Light
b. Chlorophyll
c. CO2
d. O2
Column – I Column - II
i.Jan Ingenhousz a. discovery of O2
ii. Joseph Priestley b. Plants restore to the air whatever breathing
animals and burning candles remove.
iii. T.W Englemann c. showed that only the green part of the plants could release oxygen.
iv. Julius von scahs d. discovery of production of glucose in plants
e. first action spectrum of photosynthesis.
f. Using a prism he split light into its spectral components and then
illuminated Cladophora, placed in a suspension of aerobic bacteria.
Which of the following shows the correct match?
a. i-c; ii-b; iii-a, e, f; iv-d
b. i-a, b; ii-c; iii-d; iv- e, f.
c. i-a; ii- b; iii- c, e; iv-f.
d. i-c, ii-a, b; iii-e, f; iv-d;
Cornelius van Niel, who, based on his studies demonstrated that photosynthesis is essentially a light-dependent reaction performed his experiments on-
1. Cladophora
2. purple and green bacteria
3. green algae
4. Non sulphur bacteria
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. |
Where does photosynthesis takes place?
a. in green leaves
b. in green parts of plant
c. in leaves
d. in complete plant
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 |
| 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. |
How many of the following statements are correct?
| i. | Products of dark reaction are substrates of light reaction. |
| ii. | Products of light reaction are substrates of dark reaction. |
| iii. | In the stroma, enzymatic reactions incorporate CO2 into the plant leading to the synthesis of sugar. |
| iv. | Dark reactions are directly light-driven. |
| v. | Chloroplast is a single membranous organelle. |
1. 2
2. 3
3. 4
4. 1
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