Photosynthesis in Higher Plants - Live Session

1.

Within the chloroplast, the membranous system consisting
1. Thylakoid membrane
2. Grana lamellae
3. Grana, Stroma lamellae
4. Grana & stroma

2.

Dark reactions are

1.	Directly light-driven & are dependent on NADPH & ATP
2.	Occur in darkness and responsible for the synthesis of NADPH & ATP
3.	Not light-dependent and responsible for the synthesis of NADPH & ATP
4.	Not directly light driven but are dependent on the products of light reactions

3.

T.W. Engelmann used a prism to split light in his experiment on organism named
1. Cladophora
2. Chlorella
3. Blue-green algae
4. Nostoc

4.

Which statement is correct regarding the clear division of labor within the chloroplast?

1.	The membranous system is responsible for trapping the light energy & also for the synthesis of ATP and NADPH
2.	The membranous system consisting of grana & stroma lamellae is responsible for enzymatic reactions and synthesis of sugar
3.	Fluid stroma is the site of synthesis of sugar, which in turn forms starch
4.	Both (a) and (c) are correct

5.

The use of [ ${}^{14}C$ ] radioactive carbon by M. Calvin in algal photosynthesis studies provided

1.	That ${CO}_{2}$ will combine with $H_{2} O$ to produce sugar
2.	That ATP and NADPH were used in the biosynthetic phase
3.	That first ${CO}_{2}$ fixation product was 3carbon organic acid
4.	All the above

6.

Choose the correct match of pigments and their colour.

(i)	Chlorophyll a	Bright green
(ii)	Chlorophyll b	Blue-green
(iii)	Xanthophyll	Yellow-green
(iv)	Carotenoids	Orange green

1. (i)
2. (i) & (ii)
3. (i), (ii) & (iii)
4. (i), (ii), (iii) & (iv)

7.

Hatch and Slack pathway occurs in

1.	Maize and tomatoes
2.	Sorghum and bell pepper
3.	Sugarcanes and tomatoes
4.	Sorghum and maize

8.

The photochemical phase of photosynthesis includes:

1.	Light absorption & formation of high-energy chemical intermediates.
2.	Light absorption, water splitting, and synthesis of carbohydrates.
3.	Light absorption, oxygen release, and formation of high-energy chemical intermediates.
4.	Light absorption, water splitting, trapping of ${CO}_{2,}$ and formation of high-energy chemical intermediates.

9.

In photosynthesis I [PS-I] and photosynthesis II [PS-II]:

1.	Antennae are different
2.	Reaction centres are different
3.	Light-harvesting complexes are different
4.	All of these

10.

In photosystem II, the reaction centre chlorophyll a absorbs

1.	680 nm wavelength of red light
2.	700 nm wavelength of red light
3.	680 nm wavelength of blue light
4.	700 nm wavelength of blue light

11.

The stroma lamellae membrane contains

1.	PS I & PS II
2.	PS I, PS II and NADP reductase enzyme
3.	PS I, PS II, NADP reductase & ATP synthase
4.	PS I & ATP Synthase

12.

Which is the source of the electron in non-cyclic photophosphorylation?
1. Sunlight
2. Antennae
3. ${CO}_{2}$
4. $H_{2} O$

13.

Oxygen evolving complex is found in
1. PS II
2. PS I
3. Cyt. b
4. ATP synthase

14.

Trough Z-scheme of transfer of electrons

1.	Both ATP & NADPH are synthesized
2.	Only ATP synthesis occurs
3.	Only NADPH synthesis occurs
4.	ATP, NADPH and carbohydrate molecule are synthesized

15.

Site of cyclic photophosphorylation is

1.	Grana lamellae
2.	Stroma lamellae
3.	Both grana and stroma lamellae
4.	Inner membrane of chloroplast

16.

The hypothesis which describes the mechanism of ATP synthesis is

1.	Z scheme
2.	Non-cyclic photophosphorylation
3.	Cyclic
4.	Chemiosmotic

17.

In photosynthesis, the development of proton gradient across a membrane is different from respiration process as

1.	In photosynthesis, proton accumulation is in the inter-membrane space of chloroplast while in respiration, it is inside the membrane of mitochondria
2.	In photosynthesis, protons accumulate inside the thylakoid membrane of chloroplast while in respiration it accumulates in the intermembrane space of mitochondria
3.	In photosynthesis, proton accumulation is in between the stroma and grana lamellae of chloroplast while in respiration it is inside the membrane of mitochondria
4.	All the above said statements have a similar meaning

18.

Since the splitting of water molecule takes place on the inner side of the thylakoid membrane, the protons, accumulate

1.	In the stroma
2.	In the lumen of the thylakoid
3.	In the matrix
4.	In between the outer and inner membrane of chloroplast

19.

NADP reductase enzyme is located on

1.	The stroma side of the membrane
2.	The lumen side of the thylakoid membrane
3.	The inner membrane of chloroplast
4.	The intermembranous space of chloroplast

20.

Decreases in pH of the lumen is due to

1.	NADP reductase enzyme, present on the membrane
2.	Presence of PS I, PSI I and NADP cyt.b on the thylakoid membrane
3.	Removal of protons from the lumen to the stroma
4.	Accumulation of protons in the lumen

21.

Which statement is incorrect:

1.	The $F_{1}$ part of ATPase enzyme present on the surface of the membrane on the side that faces the stroma.
2.	The $F_{0}$ is embedded in the membrane and forms a transmembrane channel.
3.	Conformational change in the $F_{0}$ particle makes the enzyme synthesize several molecules of energy-packed ATP.
4.	All the above are correct.

22.

I.	C4 pathway is found in plants adapted to dry tropical regions.
II.	C3 pathway is the Maine biosynthetic pathway in C4 plants.
III.	C4 plants have greater productivity of biomass.

1.	All are correct
2.	Only II is incorrect
3.	Only III is correct
4.	Both (II) and (III) are correct

23.

In the given graph what does A, B represent?

1.	A - Absorption spectrum ; B - Action spectrum (Chl. a)
2.	A - Action spectrum ; B - Absorption spectrum (carotenoids)
3.	A - Absorption spectrum ; B - Action spectrum (Ch. b)
4.	A - Action spectrum ; B - Absorption spectrum (Ch.a)

24.

Choose the incorrect option with respect to stroma lamellae:

1.	Presence of PS l
2.	Site of cyclic photophosphorylation
3.	Perform photosynthesis at wavelength > 680 nm
4.	Presence of NADP + reductase

25.

Which of the following complex of mitochondrial ETS having two copper centers?
1. Cytochrome b c1 complex
2. NADH dehydrogenase complex
3. Succinate dehydrogenase complex
4. Cytochrome oxidase complex

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