In photosynthesis, the light-independent reactions take place at 

1. thylakoid lumen 

2. photosystem l

3. photosystem ll

4. stromal matrix

Subtopic:  Light Reactions :1 | Light Reactions |
 69%
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NEET - 2015
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Following is needed in the ionic form during non-cyclic photophosphorylation but not during cyclic photophosphorylations in higher plants. 

(1) copper

(2) iron

(3) manganese

(4) zinc

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 66%
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The C4 plants differ from C3 plants with reference to the: 

1. substrate that accepts CO2 in carbon assimilation

2. type of end product

3. type of pigment involved in photosynthesis

4. end product that will be formed 

Subtopic:  Dark Reaction: Biosynthetic Phase | Light Reactions :1 | Light Reactions |
 81%
From NCERT
AIIMS - 2014
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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

Subtopic:  Dark Reaction: Biosynthetic Phase | Light Reactions :1 | Light Reactions |
 61%
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Products of light reaction does not include-
a. ATP & NADPH
b. CO2
c. O2
d. Electrons

Subtopic:  Light Reactions :1 | Light Reactions |
 69%
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Photochemical phase does not include-
a. water splitting
b. oxygen release
c. CO2 assimilation
d. light absorption

Subtopic:  Light Reactions :1 | Light Reactions |
 80%
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Which of the following statement is incorrect?
a. Reaction centre is formed by a group of chl- a molecules.
b. Reaction centre is different in both the photosystems.
c. In PS I the reaction centre chlorophyll a has an absorption peak at 700 nm.
d. In PS II the reaction centre chlorophyll a has absorption maxima at 680 nm.

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 60%
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In photosystem-I, P700 refers to-
1. chl-b
2. chl-a
3. number of pigment molecules
4. absorption peak of chl-a at 700nm.

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 80%
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Light harvesting complexes are made up of-
1. proteins
2. pigments
3. protein and pigments
4. proteins and lipids.

Subtopic:  Light Reactions :1 | Light Reactions |
 73%
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Electrons in the reaction center of PS-I are excited by-
a. blue light
b. red light
c. green light
d. blue and red light.

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 50%
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