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WORKING OF EYE -
Human eye is sensitive to light wavelenght ranging from 380 - 760 nm.
Bees, ants, spiders and gold fish can see uttraviolet light which is invisible to human.
It has 2 functional parts -
1. Focussing part or dioptic -
It consists of conjunctiva, cornea, aquous humour, lens, vitrous humour. They refrect the light rays to bring them on the retina. Maximum refrection is caused by cornea.
2. Receptor part -
It comprises of retina. Here inverted and smaller image is formed.
In man Binocular or steroscpic vision is formed due to position of eyes i.e. close to each other.
In rabbit and other animals except primates monocular or panoramic image is formed.
Aspect of Tolerance and Dependence: Drug-abusers are said to be psychologically dependent upon certain drugs. Drugs also induce clear physical dependence in the chronic users.
What does an osteoblast cell do? Living cells within the bone are occupied in an unceasing process of remodeling. Osteoblasts lining the surface of bone are much like fibroblas
Molecular Genetics and Plant Growth Hormone Molecular genetics has advanced over the last three decades by leaps and bounds, providing knowledge regarding the control of devel
HEAR T OUTPUT The amount of blood pumped by heart per minute. Heart beat is 72. Pump out blood is 70 ml. This 72 × 70 = 5040 ml. ( 5 litres) blood is pumped in a minute.
The boll weevil, an insect native to Mexico and Central America, is another pest of commercial cotton. When chemical insecticides were first discovered, they proved highly effectiv
Determine People who are at risk from drug-nutrient interactions? People who are at risk from drug-nutrient interactions are the: 1. Persons who have a poor diet or in other
Explain Structural protiens Structural proteins are fibrous proteins. The most familiar of the fibrous proteins are probably the keratins, which form the protective covering o
Explain the Safe Requirement of nutritional needs? Given the individual variations in nutritional requirements that have been discussed earlier, the lowest continuing intake le
A few simple tips which should be given to the patient. • Boiling, steaming, baking, pressure cooking should be encouraged • Consume small and light meals frequently instea
Moss Stage - Xerarch The accumulation of soil, particularly in the crevices and depressions of rock favours the growth of certain xerophytic mosses, e.g., species of Polytrich
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