12th Biology - Important Question :

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Chapter 1 : Sexual Reproduction in flowering plants  : -


1.  What is cleistogamous flowers ?  ( 1M ) 

2.  Which Substance is found in exine of pollen grain  ?  ( 1M  )

3.  Which Part of flowers develop into Fruit ?  Explain Part of flowers.  ( 1M  )

4. Why Apple is called a false fruit  ?  ( 2M )

5.  What is microscopic pollengrain tetrad  ?   ( 2M )

6.  Write the main function of Tapetum ?  ( 2M  ) 

7.  Draw a  well labelled diagram of L.S. of a typical angiosperm ovule  ?  ( 3M  )

8.  Diagram of pollen grain and lable their Part's.  ( 3M  )

9.  Development of Male and female gametophyte takes place in which part of  angiosperm flowers.?   ( 3M ) 

10.  Explain Binucleate embryo sac and how they formed  .  ( 3M  )


Chapter - 2 : Human Reproduction  : -


1.  Draw a Diagram of T. S. of Human Ovary and Describe the following :
  a.  Blood Vessels
  b.  Graafian follicle
  c.   Ovum.                                ( 3 M  )

2.  What is Spermatogenesis  ? Describe various phases of Spermatogenesis in human being with diagrams.     (  5M. )

3.  Which Hormones are involved in induction of Parturition  ?       ( 2M  )

4.  What is Menstrual Cycle  ? Which hormones regulated menstrual cycle ? ( 3M  )

5.  What is Parturition  ?  ( 2M ) 

6.  Draw label diagram of Human sperm and female Ovary  .

7.  Draw the labelled diagram of male reproductive system. 

8.  Write function of following  :  a)  Corpus luteum . b)  Endometrium  . C)  Acrosome  .  d)  Sperm Tail  .  e)   Fimbriae. 


Chapter 3 : Reproduction Health :-

1.  What is infertility  ? Write any four methods to assist infertile couples to have children. 

2.  Where  was AIDS reported for the first time  ? Describe the methods of transmission and control measures of this disease.    

3.  Give Full name of     a) GIFT   b)  IUCD     c)  ZIFT  ? 

4.  What is down syndrome ? Write it's symptoms. 

5.  What is Amniocentesis  ? Write it's advantage?  


Chapter - 4 : Principle of Inheritance Variation :-

1.  What is sex Linkage and Co-Dominance.     ( 4M) 

2.   What is.  A)  Test Cross.  B)   Back Cross.  C)  MonoHybride Cross?  Explain the phenotype and Genotype formed in F2 generation with the help of checker board. 

3.  What is Incomplete Dominance and Point Mutation . Give example. 

4.  Write any two differences between dominance and epistasis. 

5.  What is phenyl ketoneuria ? Write it's main reasons.  

6.  Explain turner Syndrome and klinefelter's syndrome  ? 

7.  What is pleiotropic gene  ? 

8.  Write the importance of mendals law. 






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