photosynthetic cells

Photosynthetic Apparatus - The photosynthetic pigments chlorophylls are present in the leaves because of which the leaves are green in colour and are called the photosynthetic organs. The leaves have the following structure: As shown in the diagram, the mesophyll regio..

Photosynthetic Apparatus - The photosynthetic pigments chlorophylls are present in the leaves because of which the leaves are green in colour and are called the photosynthetic organs. The leaves have the following structure: Histological Details of a Leaf in Cross Sect..

Each cell whether in a unicellular form like Gleocapsa or multicellular form like Nostoc, has a definite cell wall. Most often it is surrounded by a thin or thick mucilagenous sheath. The inner layer of cell wall has a chemical composition similar to bacterial cel..

Leaf Structure - Photosynthesis occurs only in the green parts of the plant. For efficient photosynthesis the leaf should be thin and have a large surface area. This helps in absorption of light and gaseous diffusion, and a means of preventing excessive water loss through stomata and epidermis. Lar..

Introduction - The first photosynthetic organism probably appeared almost three billion years ago. With the evolution of photosynthesis, however, organisms began to change the face of our planet and, as a consequence, to exert strong influences on each other. Organisms have continued to c..

C 4 pathway - C 4 plants like maize, sugarcane; pearl millet, etc. have evolved a wonderful mechanism to avoid photorespiration, which is considered a wasteful process. In these plants three or 2 types of photosynthetic cells namely mesophyll cells and bundle sheath ..

Photorespiration - It has been observed that a high concentration of oxygen, inhibits photosynthesis. This is due to the reason that the CO 2 fixing enzyme RUBP carboxylase not only accepts CO 2 but can also combine with O 2 . Since the reaction is an oxygenation reaction, the same enzyme is called..

Stephen Hales - Father of plant physiology Lipmann - Father of ATP cycle Winogradsky - Father of nitrogen fixation Destruction of chlorophyll due to high light intensity is called solarisation. DCMU (Dichlorophenyl dimethyl urea) - a herbicide - inhibits oxygen release in light phase ..

It is a diverse group of algae, most of which are fresh water forms. A few are marine forms. The plant body may be unicellular and motile (as in Chlamydomonas) or colonial and motile (as in volvox) or colonial and non motile (as in hydrodictyon) or filamentous (as in Oedogonium and Cladophora). Sha..

Although matter circulates, energy cannot be reused indefinitely. Solar energy is converted by the photosynthetic producers (plants) into chemical energy in the form of plant carbohydrates. Herbivores consume the plant carbohydrates and so this chemical energy is transferred to them. Carn..