Teratogenesis MCQs

1)The word ‘teros’ means?

a)animal    
b)monster   
c)plants    
d)both a and b

2)Agent that produce permanent alteration in structure or function during fetal life is?

a)androgens   
b)toxins   
c)teratogens   
d)mutagens

3)Branch deals with development and patterns of abnormal development is?

a)teratology   
b)teratogenicity    
c)teratogenesis    
d)taxonomy

4)Teratogenicity means induction of ——–by teratogens?

a)malnutrition  
b)malformation   
c)over growth    
d)production

5)Teratogenesis is process in which congential malformation are produced in?

a)children    
b)adults    
c)olds    
d)embryo or fetus

6)Susceptibility of teratogenesis depends upon ——–of fetus and?

a)genotype    
b)phenotype    
c) maternal genome   
d)both a and c

7)Manifestations of abnormal development leads to ?

a)death    
b)malformation     
c)growth retardation    
d)all of above

8)  What is the length of fertilization and implantation of zygote?

a)1 week    
b)2 weeks     
c)3 weeks    
d)1 month

9)Start of placenta occurs during period of formation of?

a)zygote    
b)embryo     
c)fetus    
d)baby

10)Development of arms,legs,face,organs and muscle occurs in?

a)zygotic stage    
b)embryonic stage    
c)fetal stage    
d)both a and b

11)Embryonic stage  lasts for?

a)4 weeks    
b)2 months     
c)6 weeks    
d)3months

12)Heart begins to beat in period of?

a)zygote     
b)embryo       
c)fetus       
d)placenta

13)the length of Growth and finishing of fetus is?

a)20 weeks      
b)25 weeks    
c)30 weeks      
d)35 weeks

14)Time period of resistant strain of gestation is?

a)5-9days       
b)4-7days      
c)9-12days     
d)7-13days

15)Embryonic stage is stage of intensive—-?

a)differentiation     
b)mobilization     
c)organization     
d)all of these

16)Embryo becomes more susceptible to teratogens of generation within?

a)5-10days      
b)10-14days      
c)15-20days       
d)17-23days

17)Causative factors in teratogenesis include?

a)heredity      
b)environment      
c)ionizing radiation      
d)all of above

18)Examples of teratogenesis occurs due to heredity are?

a)cleft lipand palate       
b)syndactyly       
c)both a and b      
d)thalidome

19)Which drugs and chemicals are causes of teratogenesis/

a)retinoic acid      
b)tetracyclin     
c)heroin     
d)all of these

20)Microcephaly occur due to which factor of teratogenesis?

a)ionizing radiation    
b)pathogens    
c)maternal disease   
d)heavy metals

21)Cataracts in eyes,deafness and abnormality in heart are symptoms of which disease?

a)rubella virus german measles

b)herpes simplex  

c)fetal alcohol syndrome

d)both a and b

22)Maternal diseases of teratogenesis include?

a)diabetes    
b)phenylketonuria     
c)malnutrition       
d)all

23)Which heavy metals lead to teratogenesis?

a)lead      
b)mercury     
c)silicon    
d)both a and b

24)heavy metal like lead can cause?

a)abortion     
b)neurological disorders    

c)diabetes       
d)over growth

25)How many types of teratogenic disorders occurs in twins?

a)2       
b)3      
c)4        
d)5

26)In which disease the twins are fused together at certain regions of body ?

a)double monsters Siamese twins

b)rubella virus german measles

c)microcephaly            
d)herpes

27)Symmetrical double monsters are born in which disease?

a)equal conjoined twins

b)unequal conjoined twins

c)Siamese twins       
d)none

28)Disease in which Twins are fused at the cranium is?

a)craniopagus     
b)thoracopagus

c)pygopagus        
d)none

29)In which disease twins are joined through anterior thorax?

a)craniopagus        
b)thoracopagus

c)pygopagus           
d)omphalopagus

30)Omphalopagus twins are joined through?

a)gastrointestinal system     
b)pericardial sac

c)abdominal wall             
d)both a and c

31)Twins that are fused through buttocks are called?

a)pygopagus        
b)thoracopagus

c)craniopagus       
d)omphalopagus

32)The smaller individual in conjoined pair is called?

a)predatic twin      
b)parasitic twin

c)neutral twin          
d)effected twin

33)Organic mercury causes the?

a)neurological symptoms     
b)abortion    
c)growth retardation

34)Mixed tumor contain differentiated organs representing all germ layers is called?

a)teratomata     
b)symptomata     
c)embryomata     
d)none

35)Mixed tumor with tissues or fragmentary parts of organs derived from more than one germ layer is called?

a)teratomata      
b)symptomata     
c)embryomata     
d)none