Photosynthesis & Respiration | Reactions | Chemistry | FuseSchool

Recent questions

• What is photosynthesis in simple terms?

  Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into oxygen and glucose. This essential biological function allows plants to produce their own food and release oxygen into the atmosphere, which is vital for the survival of most living organisms. During photosynthesis, chlorophyll, the green pigment in plants, captures sunlight and facilitates the conversion of these raw materials into energy-rich compounds. This process not only supports plant growth but also plays a crucial role in maintaining the Earth's oxygen levels.

• How do plants absorb sunlight?

  Plants absorb sunlight through a pigment called chlorophyll, which is primarily found in their leaves. Chlorophyll captures light energy, particularly from the blue and red wavelengths, while reflecting green light, which is why leaves appear green. This absorbed light energy is then used in the process of photosynthesis to convert carbon dioxide and water into glucose and oxygen. The efficiency of this light absorption is critical for the plant's ability to produce food and grow, making chlorophyll an essential component of the photosynthetic process.

• What is the role of chlorophyll?

  Chlorophyll plays a vital role in photosynthesis by absorbing light energy from the sun, which is necessary for the conversion of carbon dioxide and water into glucose and oxygen. This green pigment is found in the chloroplasts of plant cells and is responsible for capturing sunlight, particularly in the blue and red light spectrum. By reflecting green light, chlorophyll gives leaves their characteristic color. Without chlorophyll, plants would be unable to harness solar energy effectively, making it impossible for them to produce food and sustain life on Earth.

• What is respiration in living organisms?

  Respiration is the biochemical process through which living organisms convert carbohydrates into energy, releasing carbon dioxide and water as byproducts. This process occurs in the mitochondria of cells and requires oxygen to efficiently break down glucose, which is a product of photosynthesis. Unlike combustion, which occurs at high temperatures, respiration operates at normal body temperatures and is facilitated by enzymes that act as catalysts. This energy release is essential for various cellular functions and activities, allowing organisms to grow, reproduce, and maintain their biological processes.

• Why do plants need well-aerated soil?

  Plants require well-aerated soil to ensure that their roots and seeds receive a constant supply of oxygen, which is crucial for respiration. In well-aerated soil, air pockets allow oxygen to diffuse into the root zone, enabling plants to efficiently convert carbohydrates into energy. Poorly aerated soil can lead to oxygen deprivation, hindering the plant's ability to respire and ultimately affecting its growth and health. Adequate soil aeration is essential for maintaining the balance of gases in the soil, supporting root development, and promoting overall plant vitality.