Which process is NOT directly involved in the gaseous exchange required for respiration in plants?
Diffusion
Stomatal opening and closing
Transpiration
Lenticular transpiration
Related Questions
The primary structure for gas exchange in leaves is:
Cuticle
Epidermis
Stomata
Vascular bundles
The respiratory quotient (RQ) of a plant is measured to be 1. Which substrate is MOST likely being primarily metabolized?
Fats
Proteins
Organic acids
Carbohydrates
How do plants obtain the oxygen required for respiration at night when photosynthesis is not occurring?
They store oxygen produced during the day
They switch to anaerobic respiration
Through lenticels and diffusion from air spaces within the plant
They do not respire at night
Which of the following statements BEST describes the relationship between photosynthesis and respiration in plants at night?
Photosynthesis and respiration both cease, maintaining a neutral balance of gases.
Photosynthesis continues at a reduced rate, while respiration increases to compensate.
Photosynthesis ceases, and respiration also ceases to conserve energy.
Photosynthesis ceases, and respiration continues, consuming stored organic molecules and releasing CO2.
Seeds respire in
Presence of
Presence of
absence of
both 1 and 3
Which of the following statements is INCORRECT regarding respiration in plants?
Plants respire only at night
Plants take in oxygen and release carbon dioxide during respiration
Plants respire through stomata and lenticels
Respiration in plants requires sunlight
Plants does not need specialised respiratory organ because
Each plant part takes care of its own gas exchange needs
Plants do not need great demands for gas exchange
Both (a) and (b)
None of the above
Which specific adaptation allows some plants to minimize water loss while still facilitating gas exchange for respiration?
Increased leaf surface area
Absence of stomata
Continuous, high rates of transpiration
Stomatal opening primarily at night in CAM plants
If a plant's respiration rate significantly exceeds its photosynthetic rate for a prolonged period, what is the MOST likely consequence?
Increased growth and biomass
Enhanced fruit and seed production
Accumulation of starch in storage organs
Depletion of stored carbohydrates and eventual plant death
Which process do plants primarily use to obtain energy?
Photosynthesis
Respiration
Decomposition
Chemosynthesis
