C4/CAM/Photorespiration_MCQ_Basic Level

C4/CAM/Photorespiration - Basic

Dear Readers,

C4 and CAM plants are plants that use certain special compounds to gather carbon dioxide (CO₂ ) during photosynthesis. Using these compounds allows these plants to extract more CO₂ from a given amount of air, helping them prevent water loss in dry climates.

Q1. The enzymes of dark reaction in C₄ plants are found in

•  Bundle sheath chloroplast
•  Mesophyll chloroplast
•  Both (a) and (b)
•  None of these

Bundle sheath chloroplast

Q2.  The family in which many plants are C₄ type

•  Malvaceae
•  Solanaceae
•  Crucifereae
•  Graminae

Graminae

Q3.  Which of the chloroplast does not contain grana

•  Pea Leaf
•  Hydrophytic stem
•  Bundle sheath of sugarcane leaf
•  Mesophyll of grasses

Bundle sheath of sugarcane leaf

Q4.  Conversion of oxaloacetic acid into malic acid is

•   Oxidation
•   Reduction
•  Carboxylation
•  Hydroxylation

Reduction

Q5.  Which of the following enzyme is responsible for the conversion of oxaloacetic acid into malic acid

•  PEP oxidase
•  PEP reductase
•  PEP dismutase
•  Malate dehydrogenase

Malate dehydrogenase

Q6.  Which of the following is required for transformation of oxaloacetic acid into malic acid

•  NADP
•   NADP₂
•   Both (a) and (b)
•  None of these

NADP₂

Q7.  Number of carboxylation in C₄ cycle is/are

•  1
•   2
•  5
•  3

2

Q8.  In Hatch and Slack pathway

•  Chloroplast are of same type
•   Occurs in Kranz anatomy where mesophyll have small chloroplast whereas bundle sheath have agranal chloroplast
•   Occurs in Kranz anatomy when mesophyll have small chloroplast where a bundle sheath have larger chloroplast
•   Kranz anatomy where mesophyll cell are diffused

Occurs in Kranz anatomy where mesophyll have small chloroplast whereas bundle sheath have agranal chloroplast

Q9.  Which one statement is not true of the C₄ pathway

•  Overcomes loss due to photorespiration
•  The CO₂ acceptor is a C₃ compound
•  Inhibited by high CO₂ concentration
•   It requires more energy than the C₃ pathways for production of glucose

Overcomes loss due to photorespiration

Q10.  In photorespiration glycolate is converted to CO2 and serine in

•   Chloroplasts
•   Peroxisomes
•   Vacuoles
•   Mitochondria

Mitochondria