The Calvin cycle proceeds in three stages: (i) Reduction, during which carbohydrate is formed at the expense of the photochemically made ATP and NADPH. (ii) Regeneration, during which the carbon dioxide acceptor ribulose – 1, 5 – biphosphate is formed. (iii) Carboxylation, during which carbon dioxide combines with ribulose – 1, 5 – biphosphate is formed. The correct sequence is:

Which of the following statement is true regarding primary carboxylation enzyme in C4 plants: (i) Found only in cells having chloroplast without granum. (ii) Found only in cells having chloroplasts with granum. (iii) Found in chloroplasts with granum and without granum. (iv) Function → carboxylation of 4 carbon compound. (v) Found in the mesophyll cells in Bell pepper.

Consider the following statements regarding oxysomes: (i) CF1 is a catalytic site and composed of 5 different polypeptides. (ii) CF0 is embedded in the lipid bilayer and it is hydrophobic. (iii) CF0 is a proton pump. (iv) CF0 is a proton translocater through which proton flows under the pressure of the PMF. Of the above statements:

Which of the following is false regarding non – cyclic electron transport?

How many of the following statements are false: (i) In both chloroplasts and mitochondria, ATP synthase complex have the same overall architecture and probably nearly identical catalytic sites. (ii) 3 – PGA is the connecting link between photorespiration and Calvin cycle in C3 plants. (iii) Photorespiration occurs predominantly in both C3 and C4 plants. (iv) Bell pepper possess Kranz anatomy in their leaves.

Consider the following statements regarding Chlorophyll a molecule: (i) Molecular formula of chlorophyll a is C55H72O5N4Mg. (ii) First developed in cyanobacteria. (iii) Found in all photosynthetic bacteria except green sulphur bacteria, purple sulphur bacteria and purple non sulphur bacteria. (iv) Found in the reaction centre, core and antenna region. Which of these statements are false?

NADP is:

The electron deficiency of PS II is compensated by:

The figure given below represents an experimental set-up. What could be drawn as a conclusion from this experiment?

In C4 plants, Calvin cycle operates in the:

hich of the following statements is not true with regard to the light reaction of photosynthesis? (i) In PS II, the reaction centre chlorophyll a has an absorption peak at 700nm, hence is called P (ii) In PS I, the reaction centre chlorophyll a has an absorption peak at 680nm, hence is called P (iii) The splitting of water molecule is associated with PS I. (iv) Photosystem I and II are involved in Z – scheme. (v) Lamellae of the grana have PS I and PS II and stroma lamellae membrane has only PS II.

Compared to retinal, chlorophyll can be described as a pigment that has a

Which of the following statements is correct?

Photosynthetic bacteria have

Which of the following statement is incorrect?

In the C4 plants, C4 cycle occurs in the mesophyll cells and C3 cycle occurs in the bundle sheath cells, whereas in CAM plants:

Phosphorylation mainly occurs due to:

Following table summarize the difference between light reaction and dark reaction: Which of the above pairs of difference is/are correct?

Light reactions	Dark reactions
(a)These are also called as biosynthetic phase	These are also called as photochemical phase
(b) These reactions occur over thylakoids.	These reactions occur in the stroma of chloroplasts.
(c) These produce assimilatory powers i.e., NADPH2 and ATP.	These consume NADPH2 and ATP.
(d) These are directly dependent upon light.	These depend upon the products synthesised during light reactions.

How many of them are wrong? p. RuBisCO is the most abundant enzyme in plants only. q. RuBisCO has active site for O2 only s. C3 cycle in C4 plants occur in Bundle sheath cells.

In chlorophyll a molecule, a third carbon of 2nd pyrol ring is attached to:

Consider the following statements regarding Calvin cycle: I. The carboxylation of the organic acceptor molecule followed by hydrolysis to generate two molecules of 3 – phosphoglyceric acid. II. The regeneration of the initial acceptor molecule thereby allowing continuous carbon assimilation. III. Calvin cycle operates in day time. IV. The required energy for Calvin cycle is obtained from both cyclic and non – cyclic electron transport reaction. Of the above statements:

How many of the following statements are true: (i) PS II is a strong oxidant. (ii) Chlorophyll are more stable pigments than Carotenoids. (iii) Proton pumping requires metabolic energy. (iv) Mg – Porphyrin head of chlorophyll is hydrophilic. (v) Oxygenic photosynthesis first started in photosynthetic protists.

he rate oh photosynthesis decreases if the wavelength of visible light exceeds 680nm. This was shown by which scientist and what is its reason:

In photosynthesis: 6CO2 + X → C6H12O6 + 6H22 + Y. X and Y respectively are:

The process of photosynthetic phosphorylation was described by:

Which stage of the Calvin Cycle utilizes ATP?

C4 -plants are more efficient in photosynthesis than C3 -plants due to

Match following Which of the following shows the correct match?

Column I	Column II
(i) Jan Ingenhousz.	(a) Discovery of O2.
(ii) Joseph Priestly	(b) Plants restore to the air, whatever breathing animals and burning candles remove.
(iii) T. W Engelmann	(c) Showed that only the green part of the plant could release oxygen.
(iv) Julius Von Sachs.	(d) Discovery of production of glucose in plants
- -   - -	(e) Using a prism, he split light into its spectral components and then illuminated Cladophora, placed in a suspension of aerobic bacteria

If plant gene alterations cause the plants to be deficient in photorespiration, what would most probably occur?

What is incorrect about bundle sheath cells-