Prajanana class 10 ke science subject ka ek bahut important chapter hai. Class 10 board exam me is chapter se har saal 5-7 marks ke questions zaroor aate hain. Is notes me hum prajanana class 10 chapter ke sabhi important points, definitions, diagrams aur exam tips ko simple Hindi me samjhenge, taaki aapko ye chapter aasani se yaad ho jaye.
Prajanana Kya Hota Hai?
Prajanana (reproduction) woh jaivik prakriya hai jiske dwara jeev apne jaisi santan utpann karte hain. Ye jeevan ke nirantarta ke liye zaroori hai. Prajanana do prakar ka hota hai — alaingik prajanana (asexual reproduction) aur laingik prajanana (sexual reproduction). Alaingik prajanana me ek hi parent se santan banti hai, jabki laingik prajanana me do parents (nar aur mada) shamil hote hain.
Alaingik Prajanana Ke Prakar
Paudhon aur kuch janwaron me alaingik prajanana kai tariko se hota hai:
1. Vibhajan (Fission)
Ameba jaise ek-koshikiya jeevon me vibhajan hota hai. Isme ek koshika do barabar bhagon me bat jati hai aur do naye jeev ban jate hain. Ye sabse saral prajanana vidhi hai.
2. Mukulan (Budding)
Hydra aur yeast me mukulan hota hai. Isme parent ke sharir par ek chhoti si kali (bud) nikalti hai jo dheere-dheere badi hokar alag ho jati hai aur naya jeev ban jata hai.
3. Kayik Pravardhan (Vegetative Propagation)
Aalu, adrakh, ganna jaise paudhon me tane, jad ya patti se naya paudha ugta hai. Kisano ke liye ye bahut upyogi vidhi hai kyunki isse jaldi aur achhi fasal milti hai.
Phool Me Laingik Prajanana
Phool paudhe ka prajanana ang hota hai. Isme nar bhag pumang (stamen) aur mada bhag jayang (pistil) hote hain. Paragan (pollination) ke baad nishedhan (fertilization) hota hai aur andashay beej me badal jata hai. Prajanana class 10 ke notes me phool ke diagram ko label karke zaroor yaad karein — board exam me ye diagram aksar puchha jata hai.
Manav me laingik prajanana hota hai. Nar prajanana tantra me vrishan (testes) shukranu banate hain, jabki mada prajanana tantra me andashay (ovary) andanu banata hai. Nishedhan ke baad bhrun ka vikas garbhashay me hota hai. Is chapter me nar aur mada prajanana tantra ke diagram bhi exam ke liye bahut mahatvapurna hain.
Prajanana Class 10: Exam Tips
Board exam me is chapter se achhe marks lane ke liye in tips ko follow karein:
- Alaingik prajanana ke sabhi prakaron ke naam aur udaharan yaad karein.
- Phool, nar aur mada prajanana tantra ke labeled diagram ki practice karein.
- Paragan aur nishedhan me antar spasht shabdon me likhna seekhein.
- NCERT ke abhyas prashnon ko likhkar hal karein.
Class 10 science ke aur chapters ke notes ke liye Anuvanshika class 10 notes aur Niyantran evam Samanvay class 10 notes zaroor padhein.
FAQs
Q. Prajanana kitne prakar ka hota hai?
Prajanana do prakar ka hota hai — alaingik prajanana aur laingik prajanana.
Q. Kya board exam me prajanana chapter se diagram aata hai?
Haan. Phool ke anubhag, nar/mada prajanana tantra ke diagram aksar 3-5 marks ke liye puchhe jate hain.
Q. Prajanana class 10 chapter ka sabse important topic kaun sa hai?
Manav prajanana tantra, phool me nishedhan aur alaingik prajanana ke prakar sabse zyada marks wale topics hain.