Contributed by:


Dr. Gokuldas P P
Division of Animal Reproduction, I.V.R.I


1. Unfertilized ovum remains for months in the oviduct of -------species

a) sow b) mare c) ewe and doe d) bitch

2. In sows, maternal recognition of pregnancy is mainly due to the action of

a) Interferon tau b) Oxytocin c) Estrogen d) Prostaglandins

3. * Ovulation of “primary oocyte” occurs in

a) mare and bitch b) sow c) cow and doe d) all of the above

4. Centric type of nidation or implantation occurs in

a) rodents b) primates c) ruminants d) none of the above

5. Chemical structure of GnRH, a decapeptide, was determined by

a) Green and Harris b) Cole and Hart c) Gorski d) Shalley and Guellemin

6. Endometrial cups are formed from

a) chorionic girdle (fetal origin) b) maternal caruncles c) endometrium (maternal origin) d) none of the above

7. In sow, the villi near the endometrial glands are enlarged and specialized to form structures called

a) Hippomanes b) amniotic plaques c) areolae d) placentomes

8. Most of the developmental anomalies occur during

a) period of embryo b) period of ovum c) period of fetus d) during birth

9. Low land abortion or Marsh land abortion is due to

a) Fescue poisoning b) Leptospirosis c) nitrate poisoning d)None of the above

10. Transformation of secondary spermatocytes to spermatids

a) spermatocytegenesis b) spermateliosis c) spermiogenesis d) spermiation

11. Attachment of sperm to the ovum occurs initially at -------segment of sperm head

a) apical b) post-acrosomal c) principal d) equitorial

12. Diffuse arm like structure of microtubules in the sperm tail are made of proteins

a) flactin b) tubulin c) spermosin d) dynein

13. In boars, seminal vesicles produces ----------which acts as chief osmotic pressure regulator in the semen

a) ergothionine b) citrate c) inocitol d) fructose

14. **pH of TRIS extender is

a) slightly acidic b) slightly alkaline c) neutral d) alkaline


1 b ; 2 c ; 3 a ; 4 c ; 5 d ; 6 a ; 7 c ; 8 a ; 9 c ; 10 b ;

11 d ; 12 d ; 13 c ; 14 a

• * ovulation of secondary oocyte in other species

• ** pH 6.8


1) Ovary of mare is ----------shaped

2) Cervix is poorly defined in ---------------species

3) Progesterone concentration at oestrus fluctuates below---------ng/ml

4) Irregular long oestrous cycles are mainly due to -------------

5) In-----------species, ovulation occurs in metoestrus

6) *PgF2α has local effect on ovary in all species except-----------

7) Fertile life span of stallion spermatozoa----------

8) Abnormal fertilization in which only male pronucleus develops------

9) In rabbits, -------substance plays role in embryonic nutrition

10) ----------is a polypeptide hormone produced by ovary

11) hCG is produced by ------------cells of the placenta

12) **Number of carbon atoms in estrogen------------

13) ------------- is a unique species in which epididymis can produce testosterone

14) Ultrasonography for pregnancy diagnosis is based on ----phenomenon

15) Maintenance of CL and Progesterone from CL are necessary throughout the gestation in ---------

16) In cows, metoestral bleeding is associated with withdrawal of -------- hormone

17) Fertile life of ova in bitch ------------

18) Shape of CL in mare----------

19) Cystic follicles are common in---------

20) Potato soup pyometra or post service pyometra is characteristic of ------------infection

21) Failure to expel the second polar body resulting in triploid zygote ---------

22) ***In cow, mare and ewe, new CL is refractory for -----days of ovulation

23) Antimicrobial constituent of semen

24) Sigmoid flexure is pre-scrotal in ---------sp.

25) In Yolkmedia for buck semen, seminal plasma must be removed to prevent yolk coagulation due to the action of ------

26) Generally semen of ------sp. doesn’t respond to freezing

27) From oogenesis onwards diplotene nucleus of oocyte remains in resting stage called----

28) Growth of follicle upto the stage of antrum is ------------

29) The cell layer of trophoectoderm covering the inner cellmass--------

30) Split oestrus is common in ----------

31) Percentage of spermatozoa in semen --------------

32) ---------- is the most important maternal cause of dystocia in ewe

33) ---------- is the most important maternal cause of dystocia in sow

34) First successful embryo transfer in cow was done by………….

35) --------ions are necessary for optimum sperm motility

36) Most important spermicidal heavy metals………..

37) Normal fructolysis index of semen ranges from----------

38) ------cells in are more common in severe testicular hypoplasia

39) Sperm specific LDH localized in midpiece

40) Glyceryl phosphoryl choline, carnitine and sialic acid in semen are secreted from------

41) Dag defect is more common in -----sp. and is associated with high level of---------metal

42) Optimum temperature for preservation of boar semen is-------------

43) -----percentage of sodium citrate dehydrate is isotonic to semen

44) First A.I was done by --------- in beagle bitch

45) First A.I in India was done by--------in Mysore Palace Dairy farm

46) Osmotic pressure of semen ranges from-----------

47) Examples for penetrating or intracellular cryoprotectants are---------

48) Examples for non-penetrating or extracellular cryoprotectants are---------

49) ---------gland is the source of antiagglutinin in sperm

50) Semen freezes at -------temperature

51) Level of ascorbic acid in semen----------

52) Trichomonas abortion is more common in -----trimester of pregnancy

53) -------is the most widely used extender for frozen semen

54) High catalase activity, reduced fructose and high pH in semen are indicative of --------

55) -----------is a β-blocking agent used to shorten parturition

56) ---------is a β-adrenergic agent used to delay parturition


1) Kidney shaped

2) bitch

3) 1 ng/ml

4) early embryonic mortality

5) cattle and buffaloes

6) Mare (*In mare, PgF2α has  systemic action )

7) 70 to 120 hours

8) androgenesis

9) Blastokinin or uteroglobulin

10) relaxin

11) syncytiotrophoblastic cells

12) 18 carbon atoms (**Testosterone-19C steroid and progesterone-21C steroid)

13) stallion

14) Doppler phenomenon

15) swine

16) estrogen

17) 4 to 8 days

18) cauliflower shaped

19) sow

20) Trichomonas infection

21) polygyny

22) 3 to 5 days (*** 11 to 12 days in sow)

23) seminal plasmin

24) boar

25) phospholipase or triacyl glycerol lipase

26) Boar semen

27) Dictyate stage

28) Gonadotropin independent

29) Rauber cells

30) Mare

31) 10%

32) ring womb

33) uterine inertia

34) Willet in 1951

35) Potassium

36) Cu and Fe

37) 1.4 to 2 mg/hr

38) medussa cells and giant cells

39) LDH-X

40) Epididymis

41) Danish Jersey, Zn

42) 15 to 18°C

43) 2.94%

44) Lazzaro Spallanzani

45) Dr.Sampathkumaran

46) 280 to 300 milliOsmol

47) Glyserol, DMSO and Ethylene glycol

48) Raffinose, sucrose, PVP and glycine

49) Prostate

50) -0.53°C

51) 3 to 8 mg/ 100ml

52) first trimester

53) Yolk citrate

54) Seminal vesiculitis

55) Carazolol

56) clenbuterol