Zoology
The first indication of metamorphosis of frog is:
A.
Formation of hind limbs
B.
Emergence of hind limbs
C.
Disappearance of tail
D.
Start of feeding
The formation of three germinal layer in gastrula is the beginning of:
A.
Morphogenesis
B.
Differentiation
C.
Gastrulation
D.
Involution
Gastrula is a stage in the development of frog which possess?
A.
An ectoderm and endoderm forming archenteron
B.
An ectodermal layer surrounded by blastocoel
C.
An ectodermal layer
D.
Ectoderm, Endoderm and nervous system
Every type of yolk is made mainly of two ingredients, What are they?
A.
Carbohydrates and Water
B.
Proteins and Phospholipids
C.
Proteins and Carbohydrates
D.
Carbohydrates and Phospholipids
Out of the four extra-embryonic membranes which two lack blood vessels?
A.
Amnion and Chorion
B.
Amnion and Allantois
C.
Amnion and Yolk sac
D.
Allantois and Yolk sac
For the synthesis of fertilization membrane, the cortical granules contain:
A.
Acid mucopolysaccharides
B.
polysaccharides
C.
Lipids
D.
Proteins
The process of transformation of spermatids into sperms is called:
A.
Spermatogenesis
B.
Spermatolysis
C.
Spermiogenesis
D.
Spermatoneogenesis
The middle piece of sperms contain:
A.
Proximal centriole, distal centriole and mitochondria
B.
Proximal centriole and mitochondria
C.
Distal centriole and mitochondria
D.
Mitochondria only
Rh factor develops in blood:
A.
At the time of sexual maturity
B.
At 20 years of age
C.
At 30 years of age
D.
Right time from birth since it is inherited from parents
When a Rh- person is given Rh+ blood for the first time:
A.
There is always harmful reaction
B.
There is always useful reaction
C.
There may not be any harmful reaction
D.
There is no reaction at all in blood
The major technique of DNA finger printing to identify restriction fragments of DNA from any individual involves:
A.
Southern blotting
B.
Density sedimentation
C.
Northern blotting
D.
Gas-liquid chromatography
The nodes of Ranvier are:
A.
The point at which axon is exposed
B.
Area in which axon swell up
C.
Area where myelin sheath touches the nerves
D.
The point at which axon divides into axonates
The quality of mammalian kidney to form a concentrated urine can be attributed to the kidney's:
A.
Loop of Henle
B.
Glomerulus
C.
Bowman's Capsule
D.
Collecting Duct
The ornithine cycle is absent in:
A.
Frogs and turtle
B.
Mammals and turtles
C.
Adult uricoletic birds and snakes
D.
Adult uricoletic birds and mammals
Which of the following sequences given that result in the formation of urea in the mammalian lives?
A.
Citruline ==>Aspartate ==> Arginine ==> Urea
B.
Ornithine ==> Citruline ==> Arginine ==> Urea
C.
Citruline ==> Ornithine ==> Arginine ==> Urea
D.
Arginine ==> Citruline ==> Ornithine ==> Urea
Catabolism includes:
A.
Oxidation of energy rich substance to produce energy
B.
Hydrogenation of substances to synthesize proteins
C.
Reaction leading to the destruction of cells
D.
The last phase of metabolism
All the reaction starting from a single molecule of glucose upto the formation of two molecules of pyruvic acid are accomplished by:
A.
Presence of O2
B.
Absence of O2
C.
Presence of N2
D.
Presence of N2 and O2
Bile contains:
A.
Pepsin and trypsin
B.
Chemotrypsin, amylopsin and steapsin
C.
Chymotrypsin and Trypsin
D.
No enzymes
Enzyme pepsin acts upon food at a pH of approximately:
A.
2 to change proteins into pepsin
B.
7 to change proteins into peptones
C.
6 to change proteins into amino acids
D.
12 to change proteins into proteoses
The enzyme invertase hydrolyses:
A.
Sucrose into glucose and fructose
B.
Cellulose into starch
C.
Glucose into sucrose
D.
Starch into sucrose
In Kreb's cycle the conversion of citric acid to isocitric acid is catalyzed by:
A.
Asconitase
B.
Isocitrase
C.
Citric acid dehydrogenase
D.
Citric acid oxidase
Formation of most of the ATP produced in respiration takes place in the:
A.
Kreb's Cycle
B.
Terminal Respiratory Pathway
C.
Ornithine Cycle
D.
None of these
Myopia is a defect in human eyes in which image is formed:
A.
Infront of retina and can be corrected by using a convex lens
B.
Infront of retina and can be corrected by using a concave lens
C.
Behind retina and can be corrected by using a concave lens
D.
Behind the retina and can be corrected by using a convex lens
Externally, the male scoliodon is differentiated from the female by the presence of:
A.
Barbels
B.
Placoid scales
C.
Claspers
D.
Rough integument
In testis of frog there are no:
A.
Sertoli cells
B.
Spermatocytes
C.
Spermatids
D.
Interstitial cells