Calvins cycle involves Reductive carboxylation

1. C55H70O6N4 Mg is
(A) An accessory pigment in photosynthesis
(B) Present in PS-II
(C) Present in all green plants
(D) All of these
Answer: (D)

2. The ionized chl.a+
(A) Receives low energy electron
(B) Receives high energy electron
(C) Expels low energy electron
(D) Expels high energy electron
Answer: (A)

3. In Calvin cycle,
(A) fructose 1,6 diphophate undergoes dephosphorylation.
(B) ATP is formed during dephosphoylation of fructose
(C) 1,3 di PGA undergo phosphorylation
(D) none of these
Answer: (A)

4. What will happen to the rate of photosynthesis if sodium bicarbonate is added in the water having hydrilla plant in a beaker
(A) It will remain normal
(B) It will be decreased
(C) It will be stopped
(D) It will be accelerated
Answer: (D)

5. Which of the following gas would disappear from the atmosphere if all the photosynthetic activities were to stop?
(A) Nitrogen
(B) Carbondioxide
(C) Hydrogen
(D) Oxygen
Answer: (D)

6. Photo-oxidation of chlorophyll and cell contents as a result of high light intensity is known as
(A) Solarization
(B) Photolysis
(C) Photperiodism
(D) Photorespiration
Answer: (A)

7. Temperature is very high but a plant is showing photosynthesis with normal rate, probably it would be
(A) C3 plant
(B) Mango plant
(C) Pea plant
(D) Sugarcane plant
Answer: (D)

8. For the process of photosynthesis all except one of the following items are essential. Point out the exception
(A) CO2, optimum temperature
(B) Glucose and oxygen
(C) Water and minerals
(D) Light and chlorophyll
Answer: (B)

9. The prerequisities of Calvins cycle are
(A) H2O, CO2, ATP
(B) ATP, H2O, NADPH2
(C) CO2, ATP, NADPH2
(D) NADPH2, H2O, CO2
Answer: (C)

10. In the calvin cycle, the assimilatory power is used during
(A) Formation of PGA
(B) Conversion of PGA to PGAL
(C) Formation of fructose 1-6 diphsophate from PGAL
(D) Formation of glucose from fructose – di- phosphate
Answer: (B)

11. Unidirectional flow of e- in non-cyclic photophosphorylation is
(A) PS II -- e- ---> PS I -- e- ---> NADP -- e- ---> water
(B) Water -- e- ---> PSII -- e- ---> PS I -- e- ---> NADP
(C) PS I -- e- ---> NADP -- e- ---> water -- e- ---> PS II
(D) Water -- e- ---> PS I -- e- ---> PS II -- e- ---> NADP
Answer: (B)

12. Which is sensitive to longer wavelength of light?
(A) Photolysis
(B) PSI
(C) PS II
(D) Photophosphorylation
Answer: (B)

13. Phytol tail is present at
(A) 3rd carbon of IInd ring
(B) 2nd carbon of IIIrd ring
(C) 7th carbon of IVth ring
(D) 3rd carbon of IVth ring
Answer: (C)

14. Reduction of co-enzyme NADP depends on
(A) Reduction of CO2
(B) Evolution of O2
(C) Photolysis of water
(D) Formation of ATP
Answer: (C)

15. Loculus is the internal space of
(A) Grana
(B) Stroma
(C) Thylakoid
(D) Quantasome
Answer: (C)

16. Calvins cycle involves
(A) Oxidative phosphorylation
(B) Oxidative carboxylation
(C) Reductive carboxylation
(D) Reductive phophorylation
Answer: (C)

17. In C4 plants, carboxylation is twice, it can be represented as
(A) Pyruvic acid + CO2 malic acid + CO2
(B) RUDP + CO2 and pyruvic acid + CO2
(C) PEPA + CO2 and RUDP + CO2
(D) PEPA + CO2 and malic acid + CO2
Answer: (C)

18. In non-cyclic photophosphorylation, all the participants acts as electron donor and acceptor except
(A) Chl-a of PS I
(B) Chl-a of PS II
(C) NADP
(D) Both (A) and (B)
Answer: (C)

19. Ribbon shaped chloroplast is present in
(A) Zygnema
(B) Spirogyra
(C) Chlorobium
(D) Chromatinum
Answer: (B)

20. Which of the following protist is a photoautotroph
(A) Thiobacillus
(B) Ferrobacillus
(C) Diatoms
(D) Chlorobium
Answer: (C)