Question

state reason for the following in green plants during the day carbon dioxide is generated in respiration but is not released out why ?

Answer 1

because   this  co2   used  in  photosynthesis   during   day  time   because  of  presence  of  loght

Answer 2

Plants give out carbon dioxide not only at night but during the day too. It happens because of the process of respiration in which plants take in oxygen and give out carbon dioxide. As soon as the sun rises another process called photosynthesis starts, in which carbon dioxide is taken in and oxygen is given out.