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erythrocytes or red blood cellsthese are otherwise called red blood cells or corpusclesthese are the most numerous cells in the bloodthere are about
external features of human hearthuman heart is a muscular hollow organ situated slightly towards left side of the thorasic cavityit is made up of
evolution of heart in higher animalsthe circulatory system in higher animals has undergone several changes during evolutionthe heart has become
need for a transport systemtransport system is essential to keep the cells alive and healthyfailure of these transport systems would result in
cutaneous respiration in frogfrog belongs to class amphibia under vertebratesit is an amphibious animal which can live both on land and in waterskin
cutaneous respiration in earthwormthe respiration performed by the skin is called cutaneous respiration in earthworm skin is the only organ of
chloroplastin plants chloroplasts are the essential organelles for carrying out photosynthesischloroplasts are found in all green plantschloroplast
photosynthetic functionstructural organisation of the leaf is suitable to perform the process of photosynthesis hence leaf is called as a food
electro magnetic radiationlight is one form of energy the light rays consist of tiny particles called photonsthe energy carried by photon is called
extracted chlorophyll pigmentsif we take chlorophyll molecule in a test tube and provide 2 co and water and expose the mixture to sunlight
preventive steps for global warming growing trees in vacant placesgrowing social forests and protect thempromoting abundant growth of
vitamin a deficiency leads to a variety of disorders of the eyes and this effects the vision some of the disorders due to vitamin a deficiency are
artificial inspirationa after artificial expiration the rescue worker should slowly release the pressure on the back of the victimb this will
artificial respirationfirst - aid for drowning victims should aim to restore respiration as quickly as possiblefirst of all nose mouth and throat
measlesthe causative organism for measles is paramyxovirusdisease spreading takes place through the nasal discharge and saliva of persons affected
measures to control malaria infection malaria is a communicable disease caused by the female anopheles mosquitoa controlling mosquito population
life cycle of filarial wormfilariasis it is popularly known as elephantiasis it is caused by a nematode parasite wuchereria bancrofti and
erythrocytic cyclethe cycle that takes place in the body of man who is considered as secondary host is called the erythrocytic cyclethe first
malarial diseasemalaria is a disease known since ancient times almost from 5th century bcthe word malaria actually means bad airit was believed that
elephentiasisit is a disease seen all over the worldthe adult worm lives in the lymph glands and the lymph vessels of manas the number of worms
occurrence of jaundiceexcessive production of bilirubin - this occurs in some diseases due to destruction of large number of red blood cells in
terminal process of diseased stagethis is the last stage in the process of disease in this stage the disease process is halted either temporarily
parasite and host during incubation periodincubation period is the second stage in the process of a diseaseit is the time between the day of
there are several methods by which a disease-causing organism can be transferred from the reservoir to the host organismdirect contact disease -