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

Where does oxygen come from during photosynthesis?
1. Oxidation of water
2. Oxidation of glucose
3. Reduction of glucose
4. From CO₂

The correct equation, representing the overall process of photosynthesis is –

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?
1. in green leaves
2. in green parts of plant
3. in leaves
4. in complete plant

Identify a,b,c and d labellings in the following diagram.

1. i - stroma lamella; ii- thylakoid; iii-stroma; iv-genetic material
2. i- stroma lamella; ii- grana; iii-stroma; iv-starch granule
3. i- grana; ii- lamella; iii-stroma; iv-starch granule
4. i- stroma lamella; ii- grana; iii-cytoplasm; iv-starch granule

Column I                          Column II
i. grana                        1. dark reaction
ii. stroma                     2. light reaction
                                   3. synthesis of ATP and NADPH+H⁺
                                   4. synthesis of sugar

1. i-b, c; ii-a, 4.
2. i-a, d; ii-b, 3.
3. i-b, d; ii-a,3.
4. i-b; ii-a, c, 4.

How many 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

Products of light reaction does not include-
1. ATP & NADPH
2. CO₂
3. O₂
4. Electrons

Absorption spectrum of chlorophyll- ‘a’ is shown by-

1. i
2. ii
3. iii
4. Not shown.