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.
Photorespiration is a problem for plants in hot, dry conditions. When it is hot and dry, plants close their stomata to conserve water. As a result, oxygen from the light-dependent reactions accumulates in leaf tissues.Oxygen competes with carbon dioxide for the binding site on rubisco.Photorespiration occurs when oxygen levels in the leaf are high relative to carbon dioxide levels.Some groups of plants have adapted to these conditions by using alternative pathways to fix carbon. C4and CAM plants avoid photorespiration in different ways. C4plants use spatial separation.hotorespiration occurs when oxygen levels in the leaf are high relative to carbon dioxide levels. Some groups of plants have adapted to these conditions by using alternative pathways to fix carbon. C4and CAM plants avoid photorespiration in different ways. C4plants use spatial separation.