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different sources of infectionthere are many sources of infection such as reservoirs carrier organisms and lifeless objectsreservoirs a habitat
characters of vitaminsvitamins are organic substancesthey are micronutrients and are required in small quantitiesthey are not synthesised in the body
sources of vitamin cit is found in many of the natural foods like fresh citrus fruits like limes lemons and oranges are rich sources of vitamin
vitamins necessityvitamins are essential organic substancesthey are micro nutrients and required in small quantitiesthey do not produce any energy by
effects of long term malnutritionthe effects of long term malnutrition are more severe in childrenchildren do not have sufficient amounts of
obesity a health hazardthe factors of obesity are complexobesity is due to over eating and excess of energy intakethe obese child when grows up will
marasmus is a disease due to the deficiency of both proteins and caloriesthe child is weaned out before one year of age and is given a diet low in
effects of kwashiorkor on childrenkwashiorker is an african word- it means displaced child the child is weaned out very early and is given foods
effects of long term malnutrition on adultsin adults once the stored carbohydrates and fats are used up the body starts using proteins to generate
effects of long term malnutrition on childrenthe effects of long time malnutrition are more severe in childrenunlike adults children do not have
effects of malnutritionthe effects of malnutrition are not the same in adults and childrenwhen the amount of food is not sufficient or when the
functions of iron in the bodyiron is the major component in haemoglobinit helps to carryout oxygen from lungs to the tissuesabout 60 to 70 of iron in
importance of water in the bodywater is the most essential constituent of lifelife cannot exist without waterabout 90 of water is present in
proteins necessitythey are called as body buildersthe proteins are used in various metabolic pathways and body buildingthey help in repairing the
care required by a hiv infected person1 an hiv infected person needs acceptance and support from the family members the home is very important
precautions to prevent from hiv to avoid hiv infection one should practice safe sex use of condoms besides a few simple precautions are given
protraction from hiv under the following conditions hiv is not transmitted1 the secretions and body fluids like saliva tears sweat faeces and
formation of female gametesovule develops from a cushion like part of the ovary called the placenta ovule is connected to the placenta by a stalk
uses of graftinggrafting helps to preserve and perpetuate varieties that cannot reproduce by vegetative methodgrafting changes less useful
advantages of vegetative propagationvegetative propagation helps to maintain fixed qualities and characteristic features of the parent plantfor
importance of reproductionreproduction is an important life process in animals and plantsreproduction is the ability of an organism to produce new
spinal nervesthey take their origin from the spinal cordthey are the mixed nerves having both sensory and motor fibres there are 31 pairs of
craninal nervescranial nerves take their origin from different areas of brain some of them are sensory some are motor and a few are mixed
spinal cordspinal cord is a long and cylindrical structureit passes through the vertebral column extending all along the dorsal surface
functions of cerebrumthe forebrain is otherwise called as lsquocerebrumit is highest centre for controlling several functions in the bodythe most