A researcher observes that a plant placed in a sealed chamber shows a net decrease in CO2 levels during the day but a net increase at night. What can be inferred about the metabolic processes occurring?
The plant is only respiring, both day and night.
The plant is only photosynthesizing, both day and night.
Photosynthesis exceeds respiration during the day, while respiration exceeds photosynthesis at night.
Respiration exceeds photosynthesis during the day, while photosynthesis exceeds respiration at night.
Related Questions
In submerged aquatic plants, how does gas exchange primarily occur?
Through specialized air sacs
Through stomata on the submerged leaves
Direct diffusion across the epidermal cells
Through root systems from the surrounding water
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 process is NOT directly involved in the gaseous exchange required for respiration in plants?
Diffusion
Stomatal opening and closing
Transpiration
Lenticular transpiration
