plant photosynthesis

Photosynthesis is the only process which produces enormous quantities of organic matter for sustaining the life on this globe. It is the only known method of manufacture of organic food from inorganic raw materials. Animals including man are directly or indirectly dependent on photo..

Summary - In photosynthesis, light energy is converted to chemical energy and carbon is fixed into organic compounds. Light energy is captured by the living world by means of pigments. The pigments involved in photosynthesis in eukaryotes include the chlorophyll and carotenoids...

Experiment to show release of oxygen during photosynthesis Take a few healthy twigs of Hydrilla, a water plant. Place it in a funnel and invert the funnel in a beaker of water. Invert a test-tube over the stem of the funnel. Leave the set-up in sunlight. After sometime, bubb..

Take a potted plant and destarch it by keeping it in darkness for 24 hours. To one of the leaves attach a piece of metal foil or paper on both sides. Leave the plant in sunlight for 48 hours. Then take the leaf and remove its metal foil. Decolourise the leaf as in the above exp..

Photosynthesis is influenced by two categories of factors - external or environmental and internal or plant factors. According to the law of limiting factors, put forward by F.F.Blackman in 1905, photosynthesis is limited by the most limiting factor. This means that, a..

Investigating the Need for Carbon Dioxide in Photosynthesis Take a potted plant. Destarch it. Insert one of its leaves in a bottle containing potassium hydroxide (KOH) solution as shown in the figure. KOH absorbs all carbon dioxide in the bottle. Leave the set up in sunlight..

Excretion in Plants - In plants, breakdown of substances is much slower than in animals. Hence accumulation of waste is much slower and there are no special organs of excretion. Green plants in darkness or plants that do not contain chlorophyll produce carbon..

Nutrition in Plants - Most plants are autotrophic. They synthesize their own food. The green plants, also called the producers, trap the solar energy and convert it into chemical energy of the food. The biochemical reactions in the body which result in the formation of..

Most plants are autotrophic. They synthesize their own food. The green plants, also called the producers, trap the solar energy and convert it into chemical energy of the food. The biochemical reactions in the body which result in the formation of chemical compounds are collect..

Day neutral plants, which show little response to length of day light. Examples: Cucumber, cotton and potato. Light also affects movement in some plants. This is called heliotropism or phototropism. Light promotes the growth in most of the plants by promoting the ..