According to the chemiosmotic hypothesis, there is a basic difference between respiration and photosynthesis. This is _____

1. In chloroplast, H+ accumulation takes place in the lumen of thylakoid but in mitochondria, this takes place in perimitochondrial space.

2. Accumulation of H+ in chloroplast takes place in matrix i.e., stroma and in mitochondria, this takes place in cristae.

3. In both the mitochondria and chloroplast the accumulation of H+ takes place in inter-membranous space but with a high rate in mitochondria

4. Both 1 and 3 are correct.

Subtopic:  Light Reaction: Photophosphorylation |
 70%
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Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because:

1. Of effective pumping of CO2 in bundle sheath cells

2. Rubisco in C4 plants has higher affinity for CO2

3. Four carbon acids are primary initial CO2 fixation products

4. The primary fixation of CO2 is mediated via PEP carboxylase

Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
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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 Sachs 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?
1. i-c; ii-b; iii-a, e, f; iv-d
2. i-a, b; ii-c; iii-d; iv- e, f.
3. i-a; ii- b; iii- c, e; iv-f.
4. i-c, ii-a,b; iii-e, f; iv-d;

Subtopic:  Historical View: Experiments |
 83%
From NCERT
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Where does photosynthesis takes place?
1. in green leaves
2. in green parts of plant
3. in leaves
4. in complete plant

Subtopic:  Chloroplast Structure |
 86%
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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

Subtopic:  Chloroplast Structure |
 80%
From NCERT
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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

Subtopic:  Chloroplast Structure |
 77%
From NCERT
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How many pigments are responsible for the color of a plant leaf?
1. 1
2. 2
3. 3
4. 4

Subtopic:  Photosynthetic Pigments |
 82%
From NCERT
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Which of the following is present in membrane of stroma lamellae?
1. NADP reductase
2. PS-I
3. PS-II
4. water splitting complex.

Subtopic:  Chloroplast Structure | Photosystems |
 83%
From NCERT
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The difference in development of proton gradient in photosynthesis and respiration is-
1. Photosynthesis has thylakoid membrane across which proton gradient is generated
2. Proton accumulation is inside the membrane of thylakoid.
3. both a and b
4. Mitochondrial membrane is involved

Subtopic:  Light Reactions :1 |
 80%
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Where does the splitting of water take place?
1. Stroma
2. Cytoplasm
3. Thylakoid lumen
4. Plasma membrane

Subtopic:  Light Reactions :1 |
 87%
From NCERT
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