461. Which of the following organ is differentiated first during development
A
Heart
B
Skin
C
Brain
D
Neural tube
Answer :
Brain
462.
The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of I-VI have been correctly identified?
A
(II) Endometrium, (III) Infundibulum, (IV) Fimbriae
B
(III) Infundibulum, (IV) Fimbriae, (V) Cervix
C
(IV) Oviducal funnel, (V) Uterus, (VI) Cervix
D
(I) Perimetrium, (II)Myometrium, (Ill) Fallopian tube
Answer :
(III) Infundibulum, (IV) Fimbriae, (V) Cervix
463. Vas- deferens arises from
A
Cauda -epididymis
B
Caput -epididymis
C
Corpus -epididymis
D
Rete testis
Answer :
Cauda -epididymis
464. The bidder canal in frog help to pass out
A
Ova
B
Sperms
C
A and B both
D
None of the above
Answer :
Sperms
465. How many sperms are formed by one primary spermatocyte
A
4
B
3
C
2
D
1
Answer :
4
466. Puberty occurs in females at the age of
A
8-10 years
B
11-14 years
C
15-17 years
D
18-20 years
Answer :
11-14 years
467. If menstrual cycle is 30 days & bleeding start on Ist day then ovulation occur on
A
14th day
B
18th day
C
3th day
D
16th day
Answer :
16th day
468. Spermatogenesis and sperm differentiation are nder the control of
A
FSH
B
LH
C
Progesterone
D
Parathyroid Hormone
Answer :
FSH
469. In human foetus, the heart begins to beat at development age of
A
4th week
B
3rd week
C
6th week
D
8th week
Answer :
4th week
470. "Homo lecithal" egg are found in
A
Petromyzon, tunicates & chondrichthes
B
Amphioxus, fish & amphibia
C
Amphioxus, tunicates & amphibia
D
Birds, Reptiles & monotrems
Answer :
Amphioxus, tunicates & amphibia