respiration in plant

Main source of oxygen are the plants which evolve oxygen as a by-product of photosynthesis. It is used chiefly by most of the living organisms in their aerobic respiration except certain anaerobics. Oxygen acts as a limiting factor in the distribution of animals in aquatic medi..

(and hence photosynthesis) are in our daily use. Examples: Natural fibres, drugs, vitamins, gums, tannins, turpentine, furniture, etc. Oxygen is being constantly consumed and carbon dioxide evolved by the respiration of animals and plants and by the burning of wood, coal, petrol..

Carbon Dioxide - Occurrence - Jan Baptista van Helmont discovered the presence of carbon dioxide in the year 1630. Although the percentage of carbon dioxide in air is very small, it plays a vital role in nature. All the food that is produced on the earth is by photosynthesis, which employs carbon d..

Lindemann (1942) put forth ten percent law for the transfer of energy from one trophic level to the next. According to the law, during the transfer of organic food from one trophic level to the next, only about ten percent of the organic matter is stored as flesh. The remaining is lost during trans..

The atmosphere contains a pool of CO 2 . CO 2 is removed from the pool by the photosynthetic activities of plants. It is released back into the environment by respiration which is carried out by all organisms including those micro-organisms (decomposing bacteria) responsible for..

Natural Green House Effect - Before interference by any human activities green house effect by a coverage of gaseous blanket was in close equilibrium with earth's surface in the form of equilibria of carbon, oxygen and hydrogen cycles. Contribution of CO 2 by natural decay of plants and a..

Green plants take in carbon dioxide to synthesize carbohydrates. The carbohydrates formed are consumed by animals, digested, absorbed and used in respiration. During respiration, the carbohydrate is oxidised to carbon dioxide, which is released into the air..

1. By the respiration of living organisms. 2. By the combustion of carbon present in carbon compounds, such as wood, coal, coke, petroleum oil, vegetable oil, alcohol etc. 3. By the decay of organic matter, like the dead bodies of animals and plants. 4. From chemical industry su..

The rate of photosynthesis is not constant throughout the day. It's rate is affected by the intensity of light. The actual requirement of the light intensity for maximum photosynthesis in a plant depends on the type of plant and also on its habitat. Generally, average sunlight ..

In the different regions of the plant body parenchyma cells are involved in different functions. On this basis, following types of parenchyma can be recognised. Chlorenchyma is the parenchyma in which the cells contain large number of chloroplasts. Chlorenchyma takes part in photosynthesi..