sajeevon ke pramukh lakshan
सजीवों के प्रमुख लक्षण sajeevon ke pramukh lakshan
jeev vigyaan kee pramukh do shaakhaen hotee hai –
1. vanaspati jagat (botany) : jeev vigyaan kee vah shaakha jisake antargat ped paudhon ka adhyayan kiya jaata hai vanaspati jagat kahalaata hai.
thriyophrestas (thaiophrastus) ko vanaspati vigyaan ka janak kahate hai.
2. jantu vigyaan (zoology) : jeev vigyaan kee vah shaakha jisake antargat praaniyon ka adhyayan kiya jaata hai use jantu vigyaan kahate hai.
arastu ko jeev vigyaan ka janak kahate hai.
arastu ko jeev vigyaan ka janak bhee kahate hai. laimaark ne sarvapratham jeev vigyaan shabd ka prayog kiya tha.
jeev (organism) : jeev ek ya ek se adhik koshikaon ka bana vah sangathan hai jisame baahy va aantarik vrddhi hotee hai. vikaas hota hai ! chetana hotee hai aur apane jaisa pratiroop banaane kee kshamata hotee hai , vah jeev kahalaata hai.
sajeevon ke pramukh lakshan
1. sabhee sajeev vrddhi karate hai : jeevon ke bhaar va sankhya mein vrddhi hotee hai , yah vrddhi jeevon mein aantarik hotee hai. jeevon ke bhaar va lambaee mein vrddhi koshika vibhaajan dvaara hota hai.
2. sajeev prajanan karate hai : sabhee sajeev apanee jaati va apane asthitv ko banaaye rakhane ke lie apane samaan santaan utpann karate hai.
udaaharan : khachchar , shramik madhumakkhee napunsak maanav aadi.
3. sajeev upaapachay kriyaen karate hai : sabhee sajeevon mein hajaaron upaapachay kriyaen hotee hai. poshan , paachan , svaangeekaran aadi ye jeevon kee spasht abhilaakshaanik gun hai.
4. sajeevon mein uttejana va chetana paayee jaatee hai : jeevon mein apane aas paas ke vaataavaran ya paryaavaran ke bhautik ,raasaayaniko tatha jaivik uddeepano ke prati pratikriya karate hai arthaat uttejana va chetana karate hai.
jeev jagat mein maanav svachetana rahata hai arthaat apane aap se avagat hai.
5. jeevon ka nishchit aakaar va aakrti hotee hai.
6. jeevon mein jaivik kriyaen jaise shvashan , utsarjan , prakaash sanshleshan aadi kriyaen hotee hai.
7. jeevon mein vibhinnata , anukoolata , samanvay gatiyaan , jeevan sangharsh aadi kriyaen hotee hai.
8. jeevon kee antat mrtyu hotee hai.