DENDROLOGY

Detailed explanation-1: -Plants carry out photosynthesis only during the day and respiration only at night.

Detailed explanation-2: -Photosynthesis in plants occurs only during the day when there is the sunlight but plants respire throughout the day and night. To carry out the process of photosynthesis, sunlight is important for the plant.

Detailed explanation-3: -We all know that plants perform photosynthesis-that remarkable and fundamental process that sustains all life on Earth. But the photosynthetic process only takes place in the presence of light; in the dark, photosynthesis ceases.

Detailed explanation-4: -Plants perform photosynthesis only in the presence of sunlight, i.e, during day. Respiration is a metabolic process which occurs throughout the day. So respiration and photosynthesis both occur during the day, but only respiration occurs at night.