Question

if plants give oxygen in sun and take carbon dioxide and plants give carbon dioxide in night and take oxygen , so when they take oxygen in winters?

Answer 1

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.