Splitting of water molecues during the light reaction of photosynthesis is associated with
(a) PSI resulting in the release of O2, Protons and transfer of electrons of PS II.
(b) PSII resulting in the release of O2, Protons and transfer of electrons of PS I.
(c) PSII resulting in the release of O2, Protons and transfer of electrons of PS II.
(d) PSI resulting in the release of O2, Protons and transfer of electrons of PS I.
(a) alone is correct
(b) alone is correct
(c) alone is correct
(d) alone is correct
(d) alone is correct
C.
(c) alone is correct
When the electrons leave the chlorophyll molecules of PS II, it leaves a hole behind it. This electron hole is filled in by a water molecule that is oxidized, or loses electrons, as it essentially splits into two hydrogen atoms or protons and an oxygen atom.
Match the following
| Column I | Column II |
| A. Chlorophyll a | 1. yellow |
| B. Chlorophyll b | 2. bright or blue green |
| C. Xanthophyll | 3. yellow - yellow orange |
| D. Carotenoids | 4. yellow green |
A - 2; B - 4; C - 1; D - 3
A - 3; B - 4; C - 2; D - 1
A - 4; B - 3; C - 2; D - 1
A - 4; B - 2; C - 1; D - 3
A - 4; B - 2; C - 1; D - 3
In photorespiration, the number of ATP and NADPH synthesised are respectively
1 and 3
2 and 3
3 and 4
0 and 0
0 and 0
Kranz anatomy is not seen in
(i) Maize
(ii) Sorghum
(iii) Tomato
(i) and (ii) only
(i) and (iii) only
(i) only
(ii) only
(ii) only
Maximum absorption of light by chlorophyll a occurs in which regions of the absorption spectrum?
(A) blue
(B) red
(C) green
(D) yellow
(A) and (B) only
(B) and (C) only
(A) and (D) only
(B) and (D) only
(B) and (D) only
3-phosphoglyceric acid (PGA) as the first CO2 fixation product in algal photosynthesis was discovered by
Joseph Priestley
Jan Ingenhousz
T.W. Engelmann
Julius von Sachs
Julius von Sachs
