respiration in plant

Leaf represents an important part of the plant body. It is involved in vital physiological activities such as transpiration, respiration and photosynthesis. Unlike the stem and the root, the leaf is flat and hence, the anatomy of the leaf differs very much from that of stem or r..

All living beings require a constant supply of energy for the various functions they perform. The energy is obtained from the sun. This energy is introduced into the biosphere by green plants by a process known as photosynthesis. Plants are able to trap this light energy and by..

Water bodies are being constantly polluted by dumping of sewage which includes organic matter and by the runoff from the agricultural fields that contains fertilisers. Pollutants like sewage, organic wastes and fertilisers contain good amount of inorganic nutrients like nitrates and phosphates. Th..

Summary of the Constituents of Air and their Significance - Constituent of air Approximate percentage by volume Significance Nitrogen 78.1% Dilutes the air, moderates respiration and combustion; essential for plants to produce proteins Oxygen 20.9% Essential for respiration..

Thermal Pollution results from power plant and factory discharges of water used for cooling purposes. These raise the temperature of a body of water. Nuclear power plants use vast quantities of water for coolants, returning the water somewhat heated. The increased temperatures ..

>Oxygen is present 21% by volume in air. It supports life and combustion. It is added to air by photosynthesis and removed from air by respiration and combustion. Nitrogen is present 78% by volume in air. It is present in proteins, which are essential for life. It is removed from air by l..

The compensation point is the point at which the rate of uptake of CO 2 by a plant is equal to the rate of output of CO 2 . It indicates the point at which the rate of photosynthesis and rate of respiration are exactly equal. A limiting factor is the factor, in a chemical ..

Nitrogen - Nitrogen forms nearly 78% of the volume of air. Earlier, the useful significance of nitrogen was not known and it was considered to be inactive. At that time, nitrogen was considered important only because it was known to moderate the processes of respiration and combustion, by..

Cells of onion peelMulticellular lifeform All living organisms, whether plants or animals, are made up of microscopic units called cells. The cell occupies the same central position in biology as the atom in the physical sciences. All living beings, plants and animals, start the..

During N 2 fixation, atmospheric N 2 is fixed into organic compounds (like amino acids, proteins, nucleic acids) in living organisms, via inorganic forms such as NH 4 + . In nitrogen fixation a large amount of energy is required to separate the two nitrogen atoms of the nitrogen molecule. This ener..