CSS Zoology Questions & Answers - Set 8

1)   Testes descend into the scrotal sacs only during breeding season in which of the following animal:

a. Bat
b. Rat
c. Hedge-hog
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!


2)   Testes in mammals are held within the scrotal sacs by:

a. Tunica albugenia
b. Tunica vaginalis
c. Tunica media
d. Gubernacular cords
Answer  Explanation 

ANSWER: Gubernacular cords

Explanation:
No explanation is available for this question!


3)   Abdominal coelomic epithelium covering a part of mammalian testes is called:

a. Tunica albugenia
b. Tunica vaginalis
c. Mesorchium
d. Mesoverium
Answer  Explanation 

ANSWER: Tunica vaginalis

Explanation:
No explanation is available for this question!


4)   Mammalian testes is divided into two vertical compartments with the help of:

a. Mediastinum testis
b. Septula testis
c. Rete testis
d. None of these
Answer  Explanation 

ANSWER: Mediastinum testis

Explanation:
No explanation is available for this question!


5)   A number of horizontal partitions extending from mediastinum testis and tunica albugenia in mammalian testes are called:

a. Septula testis
b. Rete testis
c. Gubemacular cords
d. None of these
Answer  Explanation 

ANSWER: Septula testis

Explanation:
No explanation is available for this question!


6)   Surfaces of mediastinum testis and septula testis are lined with:

a. Tunica externa
b. Tunica vaginalis
c. Tunica vasculosa
d. Tunica albugenia
Answer  Explanation 

ANSWER: Tunica vasculosa

Explanation:
No explanation is available for this question!


7)   Cells of Leydig are found in the:

a. Connective tissue of the testis
b. Islets of langerhans
c. Seminiferous tubules
d. Renal cortex
Answer  Explanation 

ANSWER: Connective tissue of the testis

Explanation:
No explanation is available for this question!


8)   Cells of Sertoli are found in the:

a. Ovary of frog
b. Testes of rabbit
c. Ovary of rabbit
d. All of these
Answer  Explanation 

ANSWER: Testes of rabbit

Explanation:
No explanation is available for this question!


9)   Clitoris in female mammal is:

a. Homologous to penis of male
b. Analogous to penis of male
c. Vestigial structure
d. Overgrowth
Answer  Explanation 

ANSWER: Homologous to penis of male

Explanation:
No explanation is available for this question!


10)   Seminiferous tubules in the rabbit are covered with:

a. Limna propria
b. Tunica albugenia
c. Tunica vaginalis
d. Tunica fibrosa
Answer  Explanation 

ANSWER: Limna propria

Explanation:
No explanation is available for this question!


11)   Sertoli cells in the testis help in:

a. Nourishment of developing sperms
b. Maturation of sperms
c. Providing temperature for sermatogenesis
d. None of these functions
Answer  Explanation 

ANSWER: Nourishment of developing sperms

Explanation:
No explanation is available for this question!


12)   Seminiferous tubules in mammals converge, penetrate through mediastinum testis and interwine to form:

a. Rete testis
b. Septula testis
c. Rete testis
d. None of these
Answer  Explanation 

ANSWER: Rete testis

Explanation:
No explanation is available for this question!


13)   Which of the following structures in mammalian testis secrete sex hormones:

a. Cells of Leydig
b. Tunica vasculosa
c. Rete testis
d. None of these
Answer  Explanation 

ANSWER: Cells of Leydig

Explanation:
No explanation is available for this question!


14)   Rete testis in rabbit is formed by:

a. 2-4 vasa efferentia
b. 5-10 vasa efferentia
c. 6-12 vasa efferentia
d. 12-20 vasa efferentia
Answer  Explanation 

ANSWER: 12-20 vasa efferentia

Explanation:
No explanation is available for this question!


15)   Epididymis in rabbit represents:

a. Pronephric duct of pronephros
b. Wolffian duct of mesonephros
c. Both of these structures
d. None of these
Answer  Explanation 

ANSWER: Wolffian duct of mesonephros

Explanation:
No explanation is available for this question!


16)   Cowper's glands are present in:

a. Frog
b. Rabbit
c. Earthworm
d. Cockroach
Answer  Explanation 

ANSWER: Rabbit

Explanation:
No explanation is available for this question!


17)   Cowper's glands are present:

a. Only in male rabbit
b. Only in female rabbit
c. Both (a) & (b)
d. None of these
Answer  Explanation 

ANSWER: Both (a) & (b)

Explanation:
No explanation is available for this question!


18)   Secretion of Cowper's glands in male rabbit comes out:

a. Prior to ejaculation
b. During ejaculation
c. After ejaculation
d. Before urination
Answer  Explanation 

ANSWER: Prior to ejaculation

Explanation:
No explanation is available for this question!


19)   Secretion of Cowper's glands in male rabbit helps to:

a. Neutralize the acidity of male and female urethra
b. Lubricate the vagina for mating
c. Perform both of these functions
d. Perform none of these functions
Answer  Explanation 

ANSWER: Perform both of these functions

Explanation:
No explanation is available for this question!


20)   Uterus masculinus in male rabbit lies at the junction of:

a. Vas deferns and prostate gland
b. Prostate gland and Cowper's glands
c. Epididymis and vas deferns
d. Testis and vas deferens
Answer  Explanation 

ANSWER: Vas deferns and prostate gland

Explanation:
No explanation is available for this question!


21)   Hypertrophy of prostate gland causes:

a. Blockade of urine
b. More formation of semen
c. Early maturation of sperms
d. None of these
Answer  Explanation 

ANSWER: Blockade of urine

Explanation:
No explanation is available for this question!


22)   Cells of Sertoli are found in the:

a. Islets of Langerhans and secrete insulin
b. Walls of the right auricle and conduct waves of contraction
c. Testes of rabbit nourish sperms
d. Stomach of rabbit and product HCI
Answer  Explanation 

ANSWER: Testes of rabbit nourish sperms

Explanation:
No explanation is available for this question!


23)   Young girls at puberty begin to develop breasts which is an example of:

a. Sexual growth
b. Metamorphosis
c. Appearance of primitive characters
d. Artificial selection
Answer  Explanation 

ANSWER: Sexual growth

Explanation:
No explanation is available for this question!


24)   Graffian follicles are found in the:

a. Ovary of frog
b. Overy of mammal
c. Testis of frog
d. Testis of mammal
Answer  Explanation 

ANSWER: Overy of mammal

Explanation:
No explanation is available for this question!


25)   Penis in the rabbit is made up of:

a. Corpus spongiosum
b. Two columns of corpora cavernosa
c. Both (a) & (b)
d. None of these
Answer  Explanation 

ANSWER: Both (a) & (b)

Explanation:
No explanation is available for this question!


26)   Germinal cells belong to:

a. Cuboidal epithelium
b. Columnar epithelium
c. Squamous epithelium
d. Sensory epithelium
Answer  Explanation 

ANSWER: Cuboidal epithelium

Explanation:
No explanation is available for this question!


27)   Lining of Bowman's capsule in rabbit is formed of:

a. Squamous flattened cells
b. Cuboidal cells
c. Columnar cells
d. Ciliated cells
Answer  Explanation 

ANSWER: Squamous flattened cells

Explanation:
No explanation is available for this question!


28)   Cells lining Bowman's capsule in the rabbit are called:

a. Podocytes
b. Cumulus oophorous
c. Graffian follicle
d. Lamina propria
Answer  Explanation 

ANSWER: Podocytes

Explanation:
No explanation is available for this question!


29)   A graffian follicle in mammals is made of:

a. Cumulus cophorous with oocyte
b. Stratum granulosum
c. Antrum folliculi with liquor folliculi
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!


30)   Afer ovulation in female rabbit the structure formed by the rupture of graffian follicle is called:

a. Corpus spongiosum
b. Corpus albicans
c. Corpus luteum
d. Corpus mammilare
Answer  Explanation 

ANSWER: Corpus luteum

Explanation:
No explanation is available for this question!


31)   The primary oocyte in mammals has which of the following structures around it:

a. Zona pellucida
b. Zona vasculosa
c. Zona radiata
d. None of these
Answer  Explanation 

ANSWER: Zona radiata

Explanation:
No explanation is available for this question!


32)   Membrana granulose is found in which of the mammalian oocytes:

a. Primary
b. Secondary
c. Both (a) & (b)
d. None of these
Answer  Explanation 

ANSWER: Secondary

Explanation:
No explanation is available for this question!


33)   Female rabbits are:

a. Induced ovulators
b. Spontaneous ovulators
c. Seasonal ovulators
d. Indifferent ovulators
Answer  Explanation 

ANSWER: Induced ovulators

Explanation:
No explanation is available for this question!


34)   How many sperms and ova will be produced from 20 primary spermatocytes and 20 oocytes respectively:

a. 80 sperms and 20 ova
b. 100 sperms and 20 ova
c. 100 sperms and 25 ova
d. 80 sperms and 80 ova
Answer  Explanation 

ANSWER: 80 sperms and 20 ova

Explanation:
No explanation is available for this question!


35)   How many spermatocytes will be required to produce 200 spermatozoa:

a. 25
b. 40
c. 50
d. 100
Answer  Explanation 

ANSWER: 50

Explanation:
No explanation is available for this question!


36)   Which part of the female represents penis of male:

a. Uterus
b. Fallopian tube
c. Vagina
d. Clitoris
Answer  Explanation 

ANSWER: Clitoris

Explanation:
No explanation is available for this question!


37)   Bidder's canal in frog is meant for the passage of:

a. Urine only
b. Sperms only
c. Vagina
d. Clitoris
Answer  Explanation 

ANSWER: Sperms only

Explanation:
No explanation is available for this question!


38)   From a single primary spermatocytes ultimately how many spermatozoa will be formed:

a. One
b. Two
c. Three
d. Four
Answer  Explanation 

ANSWER: Four

Explanation:
No explanation is available for this question!


39)   In which of the following organs of mammals corpus luteum is found:

a. Liver
b. Spleen
c. Kidney
d. Ovary
Answer  Explanation 

ANSWER: Ovary

Explanation:
No explanation is available for this question!


40)   Which of the following statements is best to explain the meiosis:

a. It is essential for sexual reproduction
b. It eliminates occurrence of mutations
c. It alternates with mitosis from generation to generation
d. It ensures transfer of same genetic complement from one to next generation
Answer  Explanation 

ANSWER: It is essential for sexual reproduction

Explanation:
No explanation is available for this question!


41)   During fertilization two cells fuse, yet blastomeres of the zygote contain the same number of chromosomes as in all cells because:

a. Meiosis occurs during cleavage
b. Chromosomes are absent in sperms
c. Meiosis occurs during gamete formation
d. Parthenogenesis occurs during gametogenesis
Answer  Explanation 

ANSWER: Meiosis occurs during gamete formation

Explanation:
No explanation is available for this question!


42)   Which of the following has haploid number of chromosomes:

a. Bacteria
b. Sperms and ova
c. Zygote
d. All of these
Answer  Explanation 

ANSWER: Sperms and ova

Explanation:
No explanation is available for this question!


43)   Ovulation in mammals is a process which means:

a. Release of eggs from graffian follicles
b. Release of egg from fallopian tube
c. Passage of egg through fimbriated funnel of fallopian tube
d. Passage of unfertilized egg out of female's body
Answer  Explanation 

ANSWER: Release of eggs from graffian follicles

Explanation:
No explanation is available for this question!


44)   How many secondary spermatocytes will be required to form 200 spermatozoa:

a. 25
b. 50
c. 75
d. 100
Answer  Explanation 

ANSWER: 100

Explanation:
No explanation is available for this question!


45)   Formation of polar bodies occurs:

a. Only during spermatogenesis
b. Only during oogenesis
c. During both of these
d. During none of these
Answer  Explanation 

ANSWER: Only during oogenesis

Explanation:
No explanation is available for this question!


46)   How many primary oocytes will form 100 ova:

a. 25
b. 50
c. 75
d. 100
Answer  Explanation 

ANSWER: 100

Explanation:
No explanation is available for this question!


47)   Cowper's glands in mammals secrete a substance to:

a. Neutralize acidity
b. Nourish sperms
c. Kill pathogens
d. Perform all these functions
Answer  Explanation 

ANSWER: Neutralize acidity

Explanation:
No explanation is available for this question!


48)   Viviparity is found in:

a. Frog
b. Lizard
c. Snake
d. Rabbit
Answer  Explanation 

ANSWER: Rabbit

Explanation:
No explanation is available for this question!


49)   Uterus masculines in man is remainant of:

a. Functional embryonic kidney
b. Embryonic mullerian duct
c. Embryonic an wolffiduct
d. None of these
Answer  Explanation 

ANSWER: Embryonic mullerian duct

Explanation:
No explanation is available for this question!


50)   Energy yielding food includes:

a. Carbohydrates only
b. Fats only
c. Proteins only
d. Carbohydrates and fats
Answer  Explanation 

ANSWER: Carbohydrates only

Explanation:
No explanation is available for this question!


51)   Proteins must be present in our food because:

a. They are reserve food for growth and repair in our body
b. They are required for growth
c. They provide us more amount of energy
d. They form steroids and corticoids
Answer  Explanation 

ANSWER: They are required for growth

Explanation:
No explanation is available for this question!


52)   Which of the following proteins have role in heredity:

a. Chromo
b. Lipoproteins
c. Phospho proteins
d. Nucleoproteins
Answer  Explanation 

ANSWER: Nucleoproteins

Explanation:
No explanation is available for this question!


53)   Polysaccharides differ with oligosaccharides in one of the following respects:

a. Polysaccharides are made up of amino acids
b. Oligosaccharides have linkage of 2 - 10 monosaccharides
c. Polysaccharides have free fatty acids
d. Oligosaccharides have glycerol molecules
Answer  Explanation 

ANSWER: Oligosaccharides have linkage of 2 - 10 monosaccharides

Explanation:
No explanation is available for this question!


54)   Which of these is not a monosacharide:

a. Mannose
b. Galactose
c. Fructose
d. Maltose
Answer  Explanation 

ANSWER: Maltose

Explanation:
No explanation is available for this question!


55)   Which of these is a polysaccharide:

a. Cellulose
b. Mannose
c. Lactose
d. Maltose
Answer  Explanation 

ANSWER: Cellulose

Explanation:
No explanation is available for this question!


56)   Which of these are involved in the synthesis of DNA and RNA:

a. Deoxyribose and ribose
b. Sucrose and maltose
c. Insulin and cellulose
d. None of these
Answer  Explanation 

ANSWER: Deoxyribose and ribose

Explanation:
No explanation is available for this question!


57)   Biosynthesis of cholesterol and corticoids as well as sex hormones is done by:

a. Carbohydrates only
b. Proteins
c. Fats
d. None of these
Answer  Explanation 

ANSWER: Fats

Explanation:
No explanation is available for this question!


58)   Frog's food, as compared to mammalian foodm has only which of these:

a. Polysaccharides
b. Nitrogen polysaccharides
c. Both (a) & (b)
d. None of these
Answer  Explanation 

ANSWER: Both (a) & (b)

Explanation:
No explanation is available for this question!


59)   Frogs get fats form:

a. Butter
b. Oil
c. Fat bodies of prey
d. None of these
Answer  Explanation 

ANSWER: Fat bodies of prey

Explanation:
No explanation is available for this question!


60)   Which of these proteins is helpful in locomotion:

a. Which of these proteins is helpful in locomotion:
b. Glycoprotein
c. Myosin
d. None of these
Answer  Explanation 

ANSWER: Myosin

Explanation:
No explanation is available for this question!