C3 Cycle

Q.

Which part of the ATPase enzyme forms a transmembrane channel in the thylakoid membrane which carries out facilitated diffusion of protons across the membrane?

1. Both F₀ and F₁

2. F₁

3. F₀

4. C₁

Q. In each Calvin cycle, how many RuBP molecules are regenerated?

1. 12
2. 4
3. 6
4. 1

Q.

How many molecules of ATP and NADPH are utilized for the regeneration of one RuBP molecule.

Q.

In TCA cycle, GTP is formed during conversion of

1. a-ketoglularic acid to succinyl CO-A

2. Succinyl Co-A into succinic acid

3. Succinic acid to fumaric acid

4. Both (A) and (B)

Q.

The enzyme which is not found in a C₃ plant is

1. PEP carboxylase

2. ATP synthetase

3. RuBP carboxylase

4. NADP reductase

Q. The primary acceptor of carbon in Calvin cycle contains how many carbon atoms?

1. 5 carbon atoms
2. 3 carbon atoms
3. 1 carbon atom
4. 4 carbon atoms

Q.

In the overall process of photosynthesis, the number of CO₂, water, sugar and 0₂ molecules utilised and produced is

1. 19

2. 12

3. 31

4. 13

Q.

What is the primary function of the Calvin cycle?

1. use ATP to release carbon dioxide

2. use NADPH to release carbon dioxide

3. split water and release oxygen

4. synthesize simple sugars from carbon dioxide

Q.

The Calvin cycle leads to reduction of

1. RUMP

2. RUBP

3. CO₂

4. 0₂

Q. Which of the following characters is common to both Funaria and Dryopteris?

1. Monoecious gametophyte
2. Heterosporous sporophyte
3. Stele is protostele
4. Dioecious gametophyte

Q.

Photosynthesis takes place in the membranes of small sacs called

1. grana

2. photosystems

3. photons

4. thylakoids

Q. Ferns belonging to the genus Adiantum is known by the common name:

1. Maiden hair fern
2. Hay-scented fern
3. Quill wort
4. Adder’s tongue fern

Q. Carboxylation in $C_3$ plants requires the following enzyme:

1. Kinase
2. RuBisCo
3. Nitrogenase
4. $\alpha$ - ketoglutarate dehydrogenase

Q. Pteridophytes are an ancient group of lower plants that contributed significantly in the generation of .

1. fossil fuels
2. oxygen
3. soil layers
4. underground water

Q.

Does photosynthesis use ATP?

Q.

Calvin was given Nobel prize in 1961 for his discovery of

1. Mode of carbon fixation

2. Photosynthesis

3. Photolysis of water

4. Light reaction

Q. In the calvin cycle, triose phosphate is formed during

1. carboxylation stage
2. reduction stage
3. regeneration stage
4. oxidation stage

Q.

Which type of plants would show higher rate of photosynthesis in low temperature and high $C{O}_2$ concentration?

1. $C_4$ plants

2. CAM plants

3. Both $C_3$ and $C_4$ plants.

4. $C_3$ plants

Q. The total requirement of ATP & NADPH for each molecule of ${\mathrm{CO}}_2$ fixed & reduced in photosynthesis in the Calvin cycle is:

1. 2 ATP & 2 NADPH
2. 2 ATP & 3 NADPH
3. 3 ATP & 2 NADPH
4. 4 ATP & 3 NADPH

Q. During photosynthesis, the carbon dioxide fixation reaction takes place in

1. cytoplasm
2. thylakoids
3. stroma of chloroplast
4. mitochondria

Q.

Even though a very few cells in a C₄ plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Can you discuss why?

Q. The first stable product formed during calvin cycle in $C_3$ plants is:

1. 2 carbon compound
2. 6 carbon compound
3. 5 carbon compound
4. 3 carbon compound

Q.

Which of the following is not a product of the light reaction of Photosynthesis?

1. Oxygen

2. NADH

3. NADPH

4. ATP

Q. Match the following:

	Column I		Column II
A	Psilopsida	1	Dryopteris
B	Lycopsida	2	Equisetum
C	Sphenopsida	3	Psilotum
D	Pteropsida	4	Selaginella

1. A-2, B-1, C-4, D-3
2. A-3, B-4, C-1, D-2
3. A-3, B-4, C-2, D-1
4. A-1, B-3, C-4, D-2

Q. Which of the following is the most abundant enzyme in the world?

1. RuBisCO
2. PEPcase
3. ATP synthase
4. NADP reductase

Q. Match the following:

	Column I		Column II
A	Psilopsida	1	Dryopteris
B	Lycopsida	2	Equisetum
C	Sphenopsida	3	Psilotum
D	Pteropsida	4	Selaginella

1. A-2, B-1, C-4, D-3
2. A-1, B-3, C-4, D-2
3. A-3, B-4, C-2, D-1
4. A-3, B-4, C-1, D-2

Q. Match the following:

	Column I		Column II
A.	Lycopsida	1.	Equisetum
B.	Sphenopsida	2.	Psilotum
C.	Pteropsida	3.	Adiantum
D.	Psilopsida	4.	Selaginella

1. A-4, B-3, C-2, D-1
2. A-1, B-2, C-3, D-4
3. A-4, B-3, C-1, D-2
4. A-4, B-1, C-3, D-2

Q.

How many among the statements given below are correct?

(1) In Equisteum the female gametophyte is retained on the parent sporophyte.

(2) In Ginkgo, female gametophyte is independent.

(3) The sporophyte of Polytrichum is more developed than that of Riccia.

(4) Sexual reproduction in Volvox is isogamous.

1. Four
2. Two
3. One
4. Three

Q. How many molecule(s) of 3-PGA (3-phosphoglycerate) is/are produced per $C{O}_2$ molecule fixed in the Calvin cycle?

1. 1
2. 2
3. 3
4. 4

Q. Gametophyte and sporophyte are free-living in

1. Marchantia
2. Polytrichum
3. Pteris
4. Funaria