Please refer to Chapter 13 Photosynthesis in Higher Plants MCQ Class 11 Biology with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 11 Biology. Students should refer to MCQ Questions for Class 11 Biology with Answers to score more marks in Grade 11 Biology exams. Students should read the chapter Photosynthesis in Higher Plants and then attempt the following objective questions.

MCQ Questions Class 11 Biology Chapter 13 Photosynthesis in Higher Plants

The Photosynthesis in Higher Plants MCQ Class 11 Biology provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.

Question. The rate of photosynthesis is controlled by
a) the rate of light reaction
b) the rate of dark reaction
c) the rates of both light and dark reactions
d) none of the above

Question. The metabolic pathway which produces carbohydrate is
a) Calvin cycle
b) Glycolysis
c) Cyclic electron pathway
d) Krebs cycle

Question. Discovery of Emerson effect has already shown the
a) two distinct photochemical reactions
b) light and dark reactions of photosynthesis
c) photophosphorylation
d) photorespiration

Question. Which one of the following statement is true for ATP?
a) ATP is prosthetic part of an enzyme
b) ATP is an enzyme
c) ATP is organic ions of enzyme
d) ATP is a Co-enzyme

Question. Water stress causes
a) opening of stomata
b) increase in metabolic rate
c) wilting of leaves
d) lesser availability of carbon dioxide

Question. Which element is required for photolysis of water:
a) Mg
b) Mn
c) Fe
d) Zn

Question. Law of limiting factor was proposed by:
a) Blackman
b) Hill
c) Arnold
d) Engelman

Question. The process of taking in CO₂ by plants and releasing O₂ is termed as
a) Transpiration
b) Respiration
c) Photosynthesis
d) Endosmosis

Question. Photosynthesis is an oxidation reduction process, the materials that is oxidised is
a) CO₂
b) NADP
c) H2O
d) PGA

 Question. Algae and other submerged plants bount in water during day time and sink at night, because
a) They come upto enjoy some time
b) They lose weight at night
c) They become bouyant due to accumulation of O₂ as a result of photosynthesis
d) They become light due to food material accumulation

Question. In the half-leaf experiment of photosynthesis, KOH solution is used because
a) It provides O₂ to the leaf.
b) It provides moisture to the leaf.
c) It helps in CO₂ fixation.
d) It absorbs CO₂

Question. During photochemical reaction of photosynthesis –
a) liberation of O₂ takes place
b) Formation of ATP and NADPH2 take place
c) Liberation of O₂, formation of ATP, and NADPH2 takes place
d) Assimilation of CO₂ takes place

Question. ADP + iP = ATP in grana is called :–
a) Phosphorylation
b) Oxidative phosphorylation
c) Photophosphorylation
d) Photolysis

Question. Photosynthesis occurs in :
a) Chloroplast
b) Nucleus
c) Mitochondria
d) Golgi body

Question. Kranz anatomy is found in the leaves of:
a) C₃ Plants
b) C₄ Plants
c) both
d) none

Question. During photosynthesis oxygen is evolved from :
a) Water
b) Sunlight
c) CO₂
d) Chlorophyll

Question. Photosynthesis in C4 plants is relatively less limited by atmospheric CO₂ levels because
a) there is effective pumping of CO₂ into bundle sheath cells
b) Rubi’s CO in C₄ plants has higher affinity for CO₂
c) six carbon acids are the primary initial CO₂ fixation products
d) the primary fixation of CO₂ is mediated via PEP carboxylase.

Question. Non-cyclic photophosphorylation results in the formation of :
a) ATP
b) ATP and NADPH
c) NADPH
d) None

Question. `:
a) Grana
b) Stroma lamellae
c) Stroma
d) all

Question. The first acceptor of CO₂ in C₄ plants is :
a) Malic acid
b) Oxaloacetic acid
c) Phosphonyl pyruvate PEP)
d) Aspartic acid

Question. The first stable product of C3 cycle is :
a) PGA
b) OAA
c) PEP
d) RUBP

Question. Which is the primary acceptor of CO2 in C3 plants:
a) RUBP
b) PEP
c) OAA
d) PGA

Question. Photorespiration occurs in :
a) C4 plants
b) C3 plants
c) Both
d) None

Question. Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is
a) calcium oxide
b) distilled water
c) potassium hydroxide solution
d) sodium carbonate.

Question. Rubisco enzyme in C4 plant is found in :
a) Mesophyll cell
b) Mitochondria
c) Peroxisome
d) Bundle Sheath cell

Question. In PS II the reaction centre is :
a) P 700
b) P 680
c) P 400
d) P 650

Question. Photosynthetically active radiation PAR) is represented by the range of wavelength of :
a) 350-450 nm
b) 400-700 nm
c) 500-600 nm
d) 450-950 nm

Question .Where does light reaction take place:
a) Grana
b) Stroma
c) Cytoplasm
d) Ribosome

Question. Photorespiration shows formation of
a) sugar but not ATP
b) ATP but not sugar
c) both ATP and sugar
d) neither ATP nor sugar.

Question. Which of the following statements is correct?
a) Photorespiration is useful process.
b) C4 plants are more efficient than C3 plants.
c) C4 plants are less efficient than C3 plants.
d) Photorespiration is absent in C3 plants but present in C4 plants.

Question. The first stable product of Calvin cycle is
a) 3-phosphoglycerate
b) 1, 3 biphosphoglycerate
c) glyceraldehyde – 3 phosphate
d) ribulose – 5- phosphate

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