Strategies for writing an effective introduction. Start by thinking about the question (or questions) you are trying to answer. Your entire essay will be a response to this question, and your introduction is the first step toward that end.
A: Plants release oxygen as a by-product of photosynthesis, a process in which carbon dioxide is converted into sugar. The sugar is then used as an energy source for the plant. When oxygen is produced through photosynthesis, it is released by the plant into the atmosphere. The sugars produced by photosynthesis are utilized by combining them with oxygen through a process called oxidation. Photosynthesis chemically converts sunlight into energy after being collected by special cells in their leaves known as chloroplasts.
They photosynthesise to produce glucose, and then respire to convert that glucose into energy. During the day, plants give out more oxygen, and during the night, plants give out more carbon dioxide. Plants have two types of respiration arobic and anerobic. Plants do not breathe like humans, although they respire. This is when they absorb oxygen from the air around them and in return, release Carbon Dioxide. This is different from photosynthesis where they release oxygen and take in carbon dioxide.