Tag: Nutrition in Plants

Introduction to Plant Nutrition

Introduction to Plant Nutrition All living things feed/need nourishment. In a previous lesson, you learnt that plants are producers, and producers make their own food. This food is in the form of a sugar (often glucose). Sugars are made during a process called photosynthesis from carbon dioxide and water. The end products, organic compounds, are…...

Light Dependent Stage

Light Dependent Stage Also referred to as the light reactions, this stage of photosynthesis occurs on the thylakoid membrane of the chloroplast. In the light dependent stage or light reactions, light from the sun is absorbed by the chlorophyll of the plant. The light energy is used to split the water molecule (H2O) into hydrogen…...

Dark Reaction

Dark Reaction These reactions occur without light but can occur with light as well. This stage of photosynthesis is also known as the Calvin Cycle or the dark reactions. The Carbon-fixation reaction occurs at this stage. This reaction uses the energy (in the form of ATP) produced from the light stage to provide the energy…...

Factors Affecting Photosynthesis

Factors Affecting Photosynthesis During the process of photosynthesis, there are certain factors that alter (speed it up or slow it down) the rate at which the process is carried out. Three major factors that will be discussed are light intensity, carbon dioxide concentration, and temperature. Light Intensity (Sunlight) The graph above shows how the rate…...

Investigating Photosynthesis

Investigating Photosynthesis Several experiments may be carried out to test what substances/conditions are necessary for photosynthesis to take place. Tests may also be done to verify the use of carbon dioxide and water in the photosynthetic process. To confirm the products, additional tests may also be done. In testing for the substances/conditions necessary, experiments may…...

The Leaf

The Leaf Being the main food-making organ in plants, leaves are often green in colour as they contain a lot of chlorophyll. The veins seen on a leaf are used to support the leaf. In these veins, there are vascular bundles which contain xylem vessels as well as phloem which carry substances to and from…...