XII TH Biology Test 4 For Practice

 

XII TH   Biology   Test  4  For  Practice

               Prof.Dr.Sadhana  Nikam

               Vice  Principal  RJ  College CSN

               M.Sc  B.Ed,PGDDE, Ph.D

                                      Section I A

Q.2  Answer  the  following.

1.Define  megasporogenesis.(Ans. Process  of  formation  of  haploid  megaspores  from  diploid megaspore  mother  cell (MMC)

2. What  is  function  of  filiform  apparatus.(Ans. To guide the  pollentube  towards  the  egg.)

3.Where  does  fertilization  and  implantation  occur? (Ans. Fertilization occur in  ampulla  of  fallopian tube &  implantation  occur  in  fundus  of  uterus.)

4. What  is  Blastulation ? ( Ans. Process  of  formation  of  hollow  &  multicellular blastocyst.)

5. What is  Phenylketonuria?(Ans.Inborn  metabolic  disorder  caused  due  to  recessive  autosomal  genes.)

6. Which  type  of  sex  determination  occur  in  honey  bees?( Ans. Haplo- diploid  type  sex  determination  occur  in  honey  bees.)

7. What  is  Genome? ( Ans. Total  genetic  constitution  of  an  organism  is called  Genome.)

8. What  is  Transcription ?(Ans. Synthesis  of  mRNA  from  DNA  is  called  Transcription.)

 

 

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