touch typing

The neurons that conduct impulses from the receptors or sense organs to the central nervous system are called the sensory neurons. They evoke sensations of touch, pain, heat, cold, vision, hearing and tast..

Imagery - Poet communicates an experience. The poet's communication is received by our senses. The senses consist of seeing, hearing, smelling, feeling and touching. The poet has to create an image to stimulate any of these senses. This is called imagery. It can be defined as the represen..

Paratonic Nastic Movements - Nastic movements do not depend on the direction of the stimulus and are diffused. Depending on the type of stimulus, nastic movements may be of the following types. i) Photonastic - due to light ii) Thermonastic - due to temperature iii) Seismonastic..

Coordination in Plants - In case of plants, growth and development is in a coordinated manner. The higher plants do not show locomotion. However, locomotion is seen in structures like sperm cells of ferns and mosses that swim towards the egg. The other movements shown by the plants are associated w..

In case of plants, growth and development is in a coordinated manner. The higher plants do not show locomotion. However, locomotion is seen in structures like sperm cells of ferns and mosses that swim towards the egg. The other movements shown by the plants are associated with the growth of the pl..

A simple D.C. generator consists of a rectangular coil ABCD which can be rotated rapidly between the poles N and S of a strong horse-shoe type magnet M. The generator coil is made of a large number of turns of insulated copper wire. The two ends of the coil are connected to the two copper..

The sepals and petals are arranged in different ways in a compact manner when the flower is in the bud condition. This arrangement of the petals and sepals on the thalamus in the bud is called aestivation. The following types are commonly met with : a) Open : The margins of sepals or ..

a) Out of total air pollutants to be 1 x 10 1 2 tons, man made pollutants are 5 x 10 8 tons. b) 25% of world's green house gases are released by USA which supports 4% of global population. c) Carbon monoxide accounts for 50% air pollution d) Suspended particulate matter (dusts of various types..

Acids, bases and salts are three main categories of chemical compounds. These have certain definite properties which distinguish one class from the other. The sour taste of many fruits and vegetables, lemon for instance, is due to various types of acids present in them. The digestive flu..

Chromatography is a method of separating and identifying various components in a mixture, which are present in small trace quantities. There are several types of chromatography, one of which is paper chromatography. It is extensively used in research and industry, to analyse and identify ..