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fallopian tubethere are two fallopian tubes connected to the uterus one on each side of itthe ovum released from the ovarian follicle enters the
a pair of ovaries are the reproductive organs in womanthey are present just below the kidneys in the abdominal cavityeach ovary has several sac like
structure of human spermatozoonnature human sperms are minute microscopic and motilestructure each sperm have an oval shaped head piece a neck a
structure of human testisthe male reproductive system consists of a pair of testis testis are male reproductive organs and produce male gametes
in earthworms when the ovaries mature the clitellum secretes a viscous substance in the form of a girdle this girdle hardens in to a cocoon around
write two part each in the body where cuboidal epithelia tissue are found in absorption and
1 a which physicochemical properties need to be regulated by the cell define chemical equilibrium and discuss how it is maintained by the cell b
blood transfusion the blood of raja cannot be transfused to rama because the blood group of raja is lsquob and blood group of rama is lsquoaif
rh-factorit is one of the factor associated with blood in addition to lsquoa lsquob lsquoab and lsquoo groups rh factor test is also done in
composition of bloodtake few ml of fresh blood in a test tube and before collecting the blood add a few drops of sodium oxalate or sodium citrate
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