Q1 How many daughter cells are produced at the end of mitotic division?
2
3
4
5
Q2 When does spermatogenesis start?
at birth
during adolesent
at sexual maturity
at youthful age
Q3 Which of the following steps is not involved in the interaction of sperm and egg?
activation of the egg metabolism to start development
the passing of the sperm through the extracellular envelope
the exocytosis of the acrosomal vesicle to release its enzymes
the chemoattraction of the sperm to the egg
Q4 Which of the following do the cells that have undergone chromosome diminution generate?
primordial germ cells
somatic cells
sex cells
gonad cells
Q5 Which of the following statements is not a measure to halt human population explosion?
increased deforestation
develop new less harmful technologies
ban the production and use of toxic chemicals
advocacy of birth control
Q6 Which of the following enzymes is not contained the acrosome?
zona lysin
neuraminidase
catalase
hyaluronidase
Q7 Which of the following reactions bear a strong resemblance to ligand – mediiated exocytotic reactions in somatic cells?
Zona reaction
Cholestrol-phospholopid reaction
Chromosomal reaction
Acrosome reaction
Q8 Which of the following is not a phase of mammalian fertilization?
Cholesterol –phospholipid reaction
Acrosome reaction
Sperm binding to zona pellucida
Zona reaction
Q9 Which of these involves the study of the problems of production?
farm enterprise
Horticulture
Food and Nutrition
Farm Management
Q10 Which of the following statements best describe the term syndromes?
A two fold changes in weight
Sets of developmental abnormalities that run together
Dramatic changes in the structure of organisms
Production of a more diffusible inhibitor
Q11 Inherited changes in development leads to:
Integration
Evolution
Differentiation
Morphogenesis
Q12 Which of the following is not one of the phases of spermatogenesis?
Spermatogenesis
Spermatogenial multiplication
Spermatogenial sequencing
meiosis
Q13 How many divisions are involved in meiosis?
4
1
3
2…ans
Q14 Which of the following prevents zona binding?
Modification of sperm secondary receptor
Exocytosis of cortical granules
Release of their enzymatic content into the perivitelline space
The inactivation of the sperm primary receptor
Q15 Which of these components of the zona pellucida has the ability to induce a complete acrosome reaction?
ZPI
ZP3
ZP2
ZP
Q16 The first macroscopicically observable event of meiotic maturation is:
Metaphase
Emission of the first polar body
Germinal vesicle breakdown
Telophase
Q17 Which of these statements best describe capacitation?
Secretions from the accessory glands
Biochemical modification of some sperm surface components
The last step of sperm cell maturation
Hyperactivation of sperm motility
Q18 What do oogonia develop from?
Primordial germ cells
Germinal vesicle
Primary oocytes
Primordial follicles
Q19 Which of the following is not given rise to by ectoderm?
Nervous system
Respiratory system
Pigment system
Epidermis
Q20 The development of many organisms is influenced by their:
Climate
internal system
Blood pressure
environment
Q1 ___ reproduces through both amplexus and internal fertilization.
Chickens
Fish
Salamanders
Sea urchins
Q2 The entire process of development of new individuals is called ___.
gestation
fertilization
procreation
gastrulation
Q3 External fertilization occurs mainly in ___ environment.
terrestrial
aquatic
dry
wet
Q4 In sea urchins, the sperm nucleus enters the egg __ to the egg’s surface.
perpendicular
intercalary
capillary
adjacent
Q5 In mammals the process of pronuclear migration takes about ____ hours.
3
6
18
12
Q6 In amphibians, fertilization can initiate radical displacement of the ___ cytoplasmic materials.
sperm’s
yolk’s
mitochondrial
egg’s
Q7 ___ is not an event of conception.
contact and recognition between sperm and egg
Migration of the sperm to the egg
Regulation of sperm entry into the egg
Fusion of genetic materials of the sperm and egg
Q8 Products of meiotic cell division each has___.
same number of chromosomes as the parent cell
double the number of chromosomes of the parent cell
bivalent chromosomes
half the number of chromosomes of the parent cell
Q9 Meiotic cell division gives rise to ___ daughter cells
2
4
5
6
Q10 Mitosis daughter cells that are __ to the parent cell.
similar
dissimilar
identical
non identical
Q11 In the normal fly eggs, the small and large mitochondrial rRNAs are located in the __ of the cleavage stage.
pole plasm
cytoplasm
mitochondria
protoplasm
Q12 The PFCs usually become concentrated in the ___ region of the larval gut.
ventral
anterior
posterior
dorsal
Q13 During cleavage in amphibians, the germ plasm is brought upwards through the ___ cytoplasm.
embryonic
yolky
egg
blastula
Q14 1. The germ plasm of the anuran amphibians collects around the ___ pole in the zygote.
North
South
Equatorial
Vegetal
Q15 Gametes arise from the ___.
germ cells
primordial germ cells
vegetal cells
germ plasm
Q16 1. An unfertilized egg is the end product of a discontinuous course called ___.
oogenesis
organogenesis
spermatogenesis
oogonium
Q17 __ leads to the resumption of the cell cycle.
fertilization
fusion
calcium increase
activation
Q18 1. Depending on the biological life cycle of an organism, gametogenesis occurs by ___ division. I. mitotic II. Meiotic III. Hapoploidic
I only
I and II
I and II
II only
Q19 APC means
Allis Pick Chris
All Progressive Congress
All P C
ALL Pension Commission
Q20 ___ cells undergo cell division and differentiation to form mature haploid gametes.
diploid
haploid
precursor
sperm
Q1 The placenta extracts food and oxygen from the ______.
yolk
blood
uterus
chorion
Q2 The blood supply of the developing fetus is continuous with that of the ___.
mother
borther
placenta
yolk sac
Q3 The following are classes of egg based on the distribution of yolk except _____.
isolecithal
telolecithal
centrolecithal
mesolecithal
Q4 Proteolytic enzymes produced by the acrosomes are known as ____.
hyaluronidase
nNeuraminidase
zona lysine
protease
Q5 The following are types of primary egg membranes except ___.
corona radiate
jelly envelop
zona radiate
vitelline membrane
Q6 In Chordates, ___ develop early during organogenesis. I. neural tube. II. Notochord III. Foreljmb
I only
II and III
I and III
I and II
Q7 Somitogenesis begins with the formation of ___.
presomitic mesoderm
primitive segments
somitomeres
myocoel
Q8 The first stage of oogenesis in vertebrates is called ___.
Neurulat
embryogenesis
morphogenesis
implantation
Q9 The elements farther from the streak will be the ___ structures.
distal
medial
ventral
lateral
Q10 The major structural characteristic avian, reptilian and mammalian gastrulation is the ______.
primary streak
primitive streak
secondary streak
tertiary streak
Q11 In Xenopus, the mersodermal precursors exist mostly in the ____ layer of the cell.
upper
lower
deeper
shallow
Q12 The late sea urchin blastula consists of a single layer of about ___ cells.
1000
1300
1500
800
Q13 _____ is a favorite organism for embryonic studies.
Turkey
Pigeon
Bat
Domestic chicken
Q14 In fish egg, cleavage occurs only in the _____.
blastodisc
periderm
mesomeres
blastomeres
Q15 Blastullae produced by radial cleavage are called ____ blastulae.
holoblastic
stereo
cavitation
blasticoel
Q16 The first cleavage plane in snail eggs is ____ to the animal vegeta axis of the egg.
perpendicular
parallel
adjacent
oblique
Q17 Cleaving cells can be experimentally trapped in ____ phase
G1
G2
F
S
Q18 The transition from fertilization to cleavage is caused by the activation of ___.
zona pellucida
mitosis promoting factor
meiosis promoting factor
bindin
Q19 The rate of cell division and the placement of blastomeres in most species is under the control of ____. I. protein II. mRNAs III. DNAs
I only
II and II
I and III
II only
Q20 The following are advantages of internal fertilization except ___.
maximized waste of gametes
relatively longer period of egg production
selective fertilization
greater chance of individual egg fertilization
Q1 Where does gastrulation begin in frogs?
vegetal region
marginal zone
vegetal hemisphere
primary mesenchyme
Q2 Which of the following is not a primary egg membrane?
vitelline membrane
chorion
zona pullicida
zona radiata
Q3 Which of the following is / are the next stage of development ih animals after cleavage and blastula formation? I. gastulation, II. gastrulation, III. invagination
I only
II only
I and III
II and III
Q4 In mammals the centromeres accompanying the male pronucleus produces its asters largely from:
condensed proteins
cAMR dependent protein kinase activity
proteins stored in the oocyte
phosphorylated sperm specific histones
Q5 Where does capacitation of the sperm occur?
In the sperm sac
In the mitochondrion
In the acrosome vesicle
Inside the female reproductive tract
Q6 Which of the following is not a class of egg based on the distribution of the yolk?
isolecithal
centrolecithal
mesolecithal
telolecithal
Q7 Which of the following tissues is not a product of the mesoderm?
pancreas
kidneys
red blood cells
cardiac muscle
Q8 What is the function of the amniotic fluid in mammalian embryonic development?
it gives rise to extra embryonic endoderm
it results in the formation of the hypoblast
it serves as a shock absorber for the developing embryo
all of the above
Q9 Somites differentiate into the following except _____.
skeletal muscle
vertebrae
smooth muscle
dermis of all vertebrates
Q10 The following are calsess of egg based on the amount of yolk present except _____.
microlecithal
centrolecithal
microlecithal
mesolecithal
Q11 Acrosomal vesicle is derived from which of the following?
Mitochondrion
Plastids
Plasmalemma
Golgi apparatus
Q12 What has the sperm been likened to?
grains
flowers
seeds
stalk
Q13 Which of the following hydrolyzes molecules of ATP and converts released chemical energy into the electrical energy that propels the sperm?
ATPase
ADPase
Dynein
Lactase
Q14 The following are constituents of the sperm except _____.
An air filled vacuole
A haploid nucleus
A propulsion system
A sac of enzymes
Q15 The following are major events of conception except ______.
Contact and recognition between sperm and egg
Regulation of sperm entry into the egg
Fusion of genetic material of sperm and egg
Inactivation of egg metabolism
Q16 The following are extraembryonic membranes produced by the embryos of amniotes except ____.
amnion
allantois
chorion
yoke
Q17 The following are types of cleavage pattern except _____.
latitudinal
biradial
spiral
bilateral
Q18 Which of the following enzymes checks the entry of more than one sperm into the ovum?
neuramindinase
zona lysin
catalase
hyaluronidase
Q19 Which of the following egg membrane types does calcareous shell of hen’s egg belong?
primary
secondary
tertiary
quadrinary
Q20 Into which of the following classes can a bird’s egg be grouped?
isolecithal
mesolecithal
telolecithal
centrolecithal
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