Plant Physiology - Transport in Plants

Q. What is the main driving force for the movement of water in plants? (2023)
  • A. Root pressure
  • B. Capillary action
  • C. Transpiration pull
  • D. Gravity
Q. What is the primary role of root hairs in plants?
  • A. Photosynthesis
  • B. Water absorption
  • C. Nutrient storage
  • D. Gas exchange
Q. What is the term for the loss of water vapor from the aerial parts of plants? (2020)
  • A. Transpiration
  • B. Evaporation
  • C. Condensation
  • D. Respiration
Q. What is the term for the movement of water across a semi-permeable membrane?
  • A. Diffusion
  • B. Osmosis
  • C. Active transport
  • D. Facilitated diffusion
Q. What is the term for the movement of water through a plant against gravity?
  • A. Translocation
  • B. Transpiration
  • C. Capillarity
  • D. Hydrolysis
Q. Which hormone is primarily involved in the regulation of stomatal opening?
  • A. Auxin
  • B. Gibberellin
  • C. Abscisic acid
  • D. Cytokinin
Q. Which hormone is primarily involved in the regulation of water loss in plants? (2023)
  • A. Auxin
  • B. Gibberellin
  • C. Abscisic acid
  • D. Cytokinin
Q. Which of the following factors does NOT affect the rate of transpiration? (2022)
  • A. Humidity
  • B. Temperature
  • C. Wind speed
  • D. Soil type
Q. Which of the following is a factor affecting the rate of transpiration?
  • A. Temperature
  • B. Humidity
  • C. Wind speed
  • D. All of the above
Q. Which of the following is a method of active transport in plants? (2019)
  • A. Osmosis
  • B. Endocytosis
  • C. Ion pumps
  • D. Diffusion
Q. Which of the following is a method of water transport in plants?
  • A. Cohesion
  • B. Adhesion
  • C. Both cohesion and adhesion
  • D. None of the above
Q. Which of the following is NOT a method of water transport in plants?
  • A. Osmosis
  • B. Diffusion
  • C. Active transport
  • D. Photosynthesis
Q. Which process is primarily responsible for the movement of water in plants? (2020)
  • A. Diffusion
  • B. Osmosis
  • C. Active transport
  • D. Transpiration
Q. Which structure in plants is primarily responsible for the uptake of water? (2021)
  • A. Stomata
  • B. Root hairs
  • C. Xylem vessels
  • D. Phloem tubes
Q. Which structure in the leaf is primarily responsible for gas exchange?
  • A. Stomata
  • B. Cuticle
  • C. Chloroplasts
  • D. Xylem
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