Photosynthesis Questions: Paper - 04

Sr. No.

Questions

Answers

The head and tail of chlorophyll are made up of

(A) Pyrrole and tetrapyrrole

(B) Porphyrine and phytin

(C) Pophyrine and phytol

(D) Tetrapyrrole and magnesium

The numbner of photons needed for the evolution of one molecule of oxygen is

(A) 8 

(B) 2

(C) 12

(D) 18

Action spectrum is

(A) A graph showing amount of light absorbed

(B) A graph showing rate of photosynthesis

(C) A graph showing absorption of light

(D) A graph showing amount of CO₂ released

C₄₀H₅₆O₂ is molecular formula of

(A) Xanthophyll

(B) Carotenes

(C) Chlorophylls 

(D) Phycobillins

Quantasome contains

(A) 150-200 chlorophyll molecules

(B) 200 chlorophyll molecules

(C) 230-250 chlorophyll molecules

(D) 300-350 chlorophyll molecules

The rate of photosynthesis is maximum in

(A) Blue light 

(B) Red light

(C) Green light 

(D) Violet light

Agranal chloroplast is seen in

(A) Bundle sheath cells

(B) Mesophyll cells

(C) Both (A) and (B)

(D) Epidermal cell

The malic acid in bundle sheath chloroplast of C₄ plants is decarboxylated to form

(A) OAA 

(B) Pyruvic acid

(C) PEPA 

(D) Aspartic acid

How many Calvin’s cycle form one glucose molecule

(A) 2 

(B) 6

(C) 4 

(D) 8

CO₂ fixing enzymes are present in

(A) Stroma lamella

(B) Grana lamella

(C) Quantasome 

(D) Stroma

PGA is the first stable compound formed in

(A) C₃ pathway 

(B) Mesophyll

(C) C₄ pathway 

(D) Both (B) and (C)

The organisms that photosynthesizes but do not evolve any molecular oxygen during the process

(A) Blue green algae

(B) Mango plant

(C) Sulphur bacteria

(D) Both (A) and (C)

C₄ plants show very high rate of photosynthesis as compare to C₃ plants, because of

(A) Dicarboxylation

(B) Bundle sheath cells

(C) Absence of photorespiration

(D) All the above

During photsynthesis, the oxygen in glucose comes from

(A) Carbon dioxide

(B) Water

(C) Both (A) and (B)

(D) Oxygen

Dark reaction require light reaction for

(A) Carboxylation of RUDP

(B) Reduction of PGA

(C) Formation of hexose phosphate

(D) Regeneration of RUBP

Erythrose monophosphate (4C) is formed during

(A) CAM pathway

(B) C₄ pathway

(C) Conversion of fructose to glucose

(D) Regeneration of RUDP

Donor and acceptor of electrons is the same chlorophyll molecule in

(A) Cyclic phtophosphorylation

(B) Photorespiration

(C) Substrate level phosphorylation

(D) Non-cyclic photophosphorylation

If a photosynthsing plant releases O¹⁸, it is concluded that the plant has been supplied with

(A) Water containing O¹⁸

(B) Oxygen in the form of ozone

(C) Sugar containing O¹⁸

(D) Carbon dioxide containing O¹⁸

Which of the following connet the primary and secondary processes of photosynthesis?

(A) NADPH₂

(B) ATP and NADPH₂

(C) ATP

(D) Ferridoxins

C₄ plants can perform photosynthesis

(A) Even in low light intensity

(B) Even in low CO₂ concentration

(C) Both (A) and (B)

(D) Only in high intensity of light and high CO₂

Chemical which absorbs light energy and changes it to chemical energy is

(A) Chlorophyll a 

(B) Chlorophyll b

(C) Xanthophyll 

(D) Carotene

In Hill’s experiment, Hill used ______ as oxygen acceptor,

(A) Hydrogen

(B) FAD

(C) NADP

(D) Haemoglobin

Fret channel is a another name for

(A) Stroma lamellae

(B) Intergranal lamellae

(C) Grana lamellae

(D) Space present in stroma lamellae

Bundle sheath chloroplast of C₄ plants are

(A) Large and agranal

(B) Large and granal

(C) Small and granal

(D) Small and agranal

In C₃ pathway, out of 12 molecules of 3-PGAL, how many are used for regeneration of RUDP?

(A) 12 

(B) 8

(B) 10

(B) 6