Agriculture Exams (Animal Science) – Page 2

#20. Specific part of the test is where formation of spermatozoa takes place
A sertoli cell
B Leydig cell
C reti testis
D semeniferous tubule
Answer: semeniferous tubule
#21. ___________ refers to the union of the sperm cell and the ovum.
A sperm migration
B conjugation
C syngamy
D Fertilization
Answer: Fertilization
#22. The average gestation period (days) in swine is _________________.
A 340
B 150
C 144
D 283
Answer: 144
#23. Implantation and placentation characterized by the formation of endometrial cups s specific for this species
A caracow
B sow
C Mare
D cow
Answer: Mare
#24. Farrowing is specific term for the act of parturition, or the act of giving birth of a __________.
A Cattle
B horse
C pig
D goat
Answer: pig
#25. Polyestrus animals are those that come in heat all throughout the year. Among the following which is not a polyestrus
A Cow
B bitch
C caracow
D pig
Answer: bitch
#26. Induced ovulator is an animal that does not ovulate unless there is copulation. Which among the following is and induced ovulator?
A pig
B Rabbit
C sheep
D cattle
Answer: Rabbit
#27. The best sign of estrus in a normal cycling animal is ___________.
A Swelling of vulva
B Mucus discharge from vulva
C Restlessness
D Standing still when mounted
Answer: Mucus discharge from vulva
#28. The best time to breed or inseminate is the ___________________.
A Before the start of estrus
B Towards the end of estrus
C Start of estrus
D Mid-estrus
Answer: Towards the end of estrus
#29. The lifespan of ejaculated mammalian spermatozoa in the female reproductive tract is about _____________________.
A 2 weeks
B 24 hours
C 5 days
D 1 week
Answer: 24 hours
#30. The hormone produced by the Sertoli cells in the semeniferous tubules which has a negative feedback effect on FSH secretion is called _________________
A prolactin
B Inhibin
C calcitonin
D oxytocin
Answer: Inhibin
#31. Any feed constituent or group of feed constituents that aids in the support of life us nutrient. It may include ____________________.
A Biogenically synthesized di-methionine and L-lysine
B Synthetically produced vitamins such as A, D and E
C Naturally occurring sugar, starch, cellulose and gums
D All of the above
Answer: All of the above
#32. Digestion is the breaking down of feed particles into suitable products for absorption __________________.
A May include chemical processes such as action of HCI produced in the G.I tract
B May include enzymatic action of proteases produced in the GI tract
C May include enzymatic actions produced by bacteria located in the cecum
D All of the above
Answer: All of the above
#33. Breakdown of feed nutrients to their basic units
A Metabolism
B Prehension
C Absorption
D Digestion
Answer: Digestion
#34. Predominant nutrient in the body of animals
A water
B proteins
C Fats
D carbohydrates
Answer: proteins
#35. Water is the cheapest and most abundant nutrient and ____________
A Makes up to 65-85% of animal body weight at birth and decreases with maturity
B Makes up to 40-50% of animal body weight at birth and increases with maturity
C Has direct relationship with body fat
D All of the above
Answer: Makes up to 65-85% of animal body weight at birth and decreases with maturity
#36. Water account for 90-95% blood and many tissues contain 70-90% water, which of the following is not true?
A Found in the animal muscles and skin as intracellular water
B Found in the blood plasma, lymph and cerebrospinal as extra cellular fluids
C Present in the feed as metabolic water
D Present in urinary tract and GI tract
Answer: Present in the feed as metabolic water
#37. Carbohydrates make up approximately ¾ of plant dry weight and make up the largest part of animals food supply. ___________________.
A Made up of C (40%), H (7%), O (53%), P (1%) and S (1%) by molecular weight
B Carbohydrates make up approximately ¾ of plant dry weight and make up the largest part of animals food supply
C Made up of C (53%), H (7%), O (23%), N (16%) and P (1%) by molecular weight
D Made up of C (53%), H (7%), O (23%), N (16%), and P (1%) and S (1%) by molecular weight
Answer: Carbohydrates make up approximately ¾ of plant dry weight and make up the largest part of animals food supply
#38. Main carbohydrate source of ruminants .
A Lignin
B hemicelluloses
C starch
D None of the above
Answer: starch
#39. Storage form of carbohydrate in the body
A Starch
B cellobiose
C glycolipid
D glycogen
Answer: glycogen