जन्तु विज्ञान

jantu vijnan athava prani vijnan (aangrezi: Zoology) jiv vijnan ki shakha hai jo jantuoan aur unake jivan, sharir, vikas aur vargikaran se sambandhit hai.

paribhasha

prani ki paribhasha kee prakar se ki gee hai. kuchh log prani aise jiv ko kahate haian jo karbohaidret, protin aur vasa ka srijan to nahian karata, par jivan yapan ke lie in par nirbhar karata hai. in padarthoan ko prani bahy srot se hi prapt karata hai. inake srijan karane vale padap jati ke jiv hote haian, jo akarbanik strotoan se prapt padarthoan se inaka srijan karate haian. ye donoan hi paribhashaean sab praniyoan par lagoo nahian hotian.

padap jati ke kuchh kavak aur jivanu aise haian, jo apana bhojan bahy strotoan se prapt karate haian. kuchh aise prani bhi haian, jo starch ka srijan svayan karate haian. at: prani aur padap mean vibhed karana kuchh dashaoan mean b da kathin ho jata hai. yahi karan hai ki prani vijnan aur padap vijnan ka adhyayan ek samay vijnan ki ek hi shakha mean sath sath kiya jata tha aur usaka nam jaiviki ya jiv vijnan diya gaya hai.

mahatv

prani vijnan ka adhyayan manushy ke lie b de mahatv ka hai. manushy ke charoan or alag-alag prakar ke jantu rahate haian. vah unhean dekhata hai aur use unase barabar kam p data hai. kuchh jantu manushy ke lie b de upayogi siddh hue haian. anek jantu manushy ke ahar hote haian. jantuoan se hamean doodh prapt hota hai. kuchh jantu oon pradan karate haian, jinase bahumooly ooni vastr taiyar hote haian. jantuoan se hi resham, madhu, lakh adi b di upayogi vastuean prapt hoti haian. jantuoan se hi adhikaansh khetoan ki jutaee hoti hai. bail, gho de, khachchar tatha gadahe ityadi parivahan ka kam karate haian. kuchh jantu manushy ko kasht pahuanchate, phasal nasht karate, pi da dete aur kabhi kabhi mar bhi dalate haian. at: prani vijnan ka adhyayan hamare lie mahatv rakhata hai.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh