how many planes are used to identify the parts of the body?

Introduction - Transportation whether in plants or animals is the key to the efficient assimilation of the nutrients that the organisms synthesise, get from their environment or digest. The study of these processes helps us in many ways. The study of transport mechanisms in plants helps us to under..

. Three regions can be recognised in the body, namely a head, a thorax and an abdomen. The head is a region formed by the fusion of six embryonic segments covered by very hard exoskeletal plates called sclerites. The head is triangular in shape and it is held at right angles to rest of th..

Saprotrophs are decomposers and liberate energy for their own use by breaking down complex organic matter from the dead bodies of other organisms. At the same time this process releases vital chemical elements into the soil which are absorbed by autotrophs. Thus saprotrophs ..

Responsible for muscle contraction for movement and locomotion Example : Myosin Harmones Some harmones are proteins. Harmones regulate body functions Example : Insulin Structural Proteins form parts of cells and tissues Example : Collagen Protective proteins ..

It is the system of giving a scientific name to an animal or a plant, an outstanding system contributed by Carolus Linnaeus. According to this system, any given animal or plant is given a scientific name consisting of two words. The first word refers to name of the genus while the second word refer..

. The kinetic energy and potential energy associated with the random motion constitute the internal energy. When a body sliding on a surface comes to rest due to friction, the organized motion of the body is converted to random motion of molecules in the body and on th..

Water constitutes nearly three-fourths of the Earth's surface and it composes a large proportion of all living plant and animal matter. Approximately 70% of human body is water. Man drinks about 2 liters of water daily and it is required in abundance for domestic use, agricultur..

This phylum is the largest in the animal kingdom comprising of more than 75% of the animal species that have been identified. Free living forms, aquatic (fresh water or marine) or terrestrial or aerial. Some parasitic forms also. Body is elongated and segmented, usually di..

While the nervous system and endocrine system have their own features, they have a common method of communication. Both the systems release chemicals to communicate between cells. Together these two systems carry out a very complex process of maintaining a homeostatic (balanced) internal environme..

The growth and use of radioactive product has increased considerably since about 1930. Radioactive sources have become part of normal school equipment and although the sources are very weak, it is essential to take stringent safety precautions. The following precautions are to ..