class 10 ka biology lesson 1

                                                                 JAIV   PRAKRAM

 *   JIV VIGYAN KA JANAK                                                     :    ARASTU

 *   JAIV PRAKRAM KYA HAI ?
  Ans : ve saari kriyayen jinke dwara jeewon ka anurakshan hota hai ,jaiv prakram kahlata hai
     
  Q.1.  Poshan kya hai ? iski jarurat kyu hoti hai ?
   Ans:  ve saari kriyayen jiske dwara jiv apna lalan-palan karti hai ,apna vikash karti hai , us prakriya              kio poshan kahte hai /
            nimnlikhit karano se iski jarurat hoti hai -
     (i)  jaivik kriya ke sanchalan hetu
     (ii) vridhi aur vikash hetu
    (iii) shaaririk tut-fut ko rokne ke karan
    (iv) urja ki jarurat ko pura karne hetu

 Q.2. Poshan kya hai ? iske vibhinn vidhiyo ko likhen / aur samjhaiye /
  Ans: waha vidhi jisse jiv poshak , tatvo ko grahan kar uska upyog karte hai , us prakriya ko poshan            kahte hai /
          poshan ki mukhytah do vidhiyan hai -
   (i)  swaposhan - aise jiv jo apna bhojan swyam banate hai , use swyam poshi jiv kahte / aur is                   prakriya ko swaposhan kahte hai /
   EX- sabhi hare - paudhe (yuglina)

  (ii) parposhan(vishamposhi) - aise jiv jo apna bhojan swayam na banakar dusre jivon par ashrit hote          hai , use parposhi jiv kahte hai / aur jis prakriya dwara ve apna bharan - poshan karte hai , use              parposhan kahte hai /
  EX - Man , Dog , Cat , and insect

   *  Pattiyon ka hara rang parnharit ( clorophil ) ke karan hota hai

 Q.3. prakash sanslesan se aap kya samajhte hai ? ya hare paudhe ko bhojan banane ke liye koun - se           kachche padarthon ki awasyakta hoti hai ?
Ans: hare paudhe surya ke prakash ke upashthiti  me urja clorophil ki upashthiti me CO2 tatha bhumi se H2O prapt kar apna bhojan taiyar karte hai es prakriya ko prakash sanslesan kahte hai /

Q.4. parposhan kitne prakar ke hote hai ? varnan karen/
Ans: parposhan mukhyatah tin prakar ke hote hai -
  (i)  miritjivi - aise jiv jo mirit jantuon aur poudho se apna bhojan prapt karte hai , use miritjivi                   poshan kahte hai
 EX - kawak , jivanu , protojoa etc.

 (ii) parjivi poshan - aise jiv jo dusre jiv ke sampark me asthai ya unasthai rup me rahkar apna bhojan         prapt karte hai , use parjivi poshan kahte hai /
EX - golkrimi , temwerm , maleriyya , parjivi etc.
(iii) pranisam poshan - vaisa poshan jisme prani apna bhojan thos ya taral ke rup me grahan karte hai         , use pranisam poshan kahte hai /
EX - amiba , frock , man etc.


  * Prakash sanslesan ki kriya ko samikaran dwara likhen /
Ans:  6CO2 + 12H2→C6H12O6 + 6CO2 + 6H2O