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.
Related Questions
Do plants respire at night?
Yes
No
Only during the day
Only when they are not photosynthesizing
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.
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
Seeds respire in
Oxygen
Nitrogen
Carbon Dioxide
Hydrogen
Through which tiny pores on leaves do plants exchange gases for respiration?
Xylem
Phloem
Stomata
Root hairs
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 is NOT directly involved in the gaseous exchange required for respiration in plants?
Diffusion
Stomatal opening and closing
Transpiration
Lenticular transpiration
Which process do plants primarily use to obtain energy?
Photosynthesis
Respiration
Decomposition
Chemosynthesis
Seeds respire in
Presence of
Presence of
absence of
both 1 and 3
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.
