Plant Physiology - Respiration in Plants

Q. In which part of the plant does most respiration occur? (2020)
  • A. Roots
  • B. Leaves
  • C. Stems
  • D. Flowers
Q. In which part of the plant does respiration primarily occur? (2020)
  • A. Roots
  • B. Leaves
  • C. Stems
  • D. All parts
Q. What is the main purpose of respiration in plants? (2023)
  • A. To produce glucose
  • B. To release energy
  • C. To absorb water
  • D. To synthesize proteins
Q. What is the main substrate for respiration in plants? (2023)
  • A. Starch
  • B. Glucose
  • C. Cellulose
  • D. Sucrose
Q. What is the net gain of ATP molecules from one molecule of glucose during aerobic respiration? (2023)
  • A. 2
  • B. 18
  • C. 30-32
  • D. 36
Q. What is the primary site of respiration in plant cells? (2021)
  • A. Chloroplast
  • B. Mitochondria
  • C. Cytoplasm
  • D. Nucleus
Q. What is the role of oxygen in aerobic respiration? (2019)
  • A. To produce glucose
  • B. To act as an electron acceptor
  • C. To release energy
  • D. To absorb carbon dioxide
Q. What is the significance of the electron transport chain in respiration? (2023)
  • A. To produce glucose
  • B. To generate ATP
  • C. To release carbon dioxide
  • D. To absorb oxygen
Q. Which enzyme is involved in the Krebs cycle during respiration? (2022)
  • A. ATP synthase
  • B. Hexokinase
  • C. Citrate synthase
  • D. Pyruvate kinase
Q. Which gas is released during the process of respiration in plants? (2022)
  • A. Oxygen
  • B. Carbon dioxide
  • C. Nitrogen
  • D. Hydrogen
Q. Which of the following is NOT a product of cellular respiration? (2021)
  • A. ATP
  • B. Water
  • C. Glucose
  • D. Carbon dioxide
Q. Which of the following is NOT a stage of cellular respiration? (2021)
  • A. Glycolysis
  • B. Krebs cycle
  • C. Electron transport chain
  • D. Calvin cycle
Q. Which of the following processes occurs during aerobic respiration in plants? (2020)
  • A. Fermentation
  • B. Glycolysis
  • C. Anaerobic respiration
  • D. Photosynthesis
Q. Which of the following statements about respiration in plants is true? (2022)
  • A. It occurs only at night
  • B. It is independent of photosynthesis
  • C. It produces more energy than fermentation
  • D. It only occurs in leaves
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