M. Sc (Zoology) (Semester II) (CBCS) Examination, 2017
DEVELOPMENTAL BIOLOGY wateriI
Day Date: Wednesday, 19-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
N.B. .Q.1, 2 6 are compulsory.
Answer any two questions from Q. 4 and 5
Q.1 Choose the correct alternative given in the bracket. 14
occurs when sperm and egg interact.
Conjugation Fertilization
Cleavage Development
Embryonic stem cells are derived from
Blastocyst Gastrula
Ectoderm All three germ layers
is cell division without growth.
Cleavage Fertilization
Development Differentiation
In the lancelet, the zygote undergoes cleavage forming a solid ball
of cells of uniform size, called a
Morula Blastual Gastrual coelom
The nervous system develops from the
ectoderm mesoderm
endoderm portions of all the above
A tube of tissue formed by a thickening and rolling up of the neural
plate during embryonic neurulation called.
Neurocoel Neural groove
Neurospore Neural tube
gives rise to segmental muscles of body and also
produce(s) the vertebral bones.
The notochord The archenteron
The neural tube Somites es
Q.2 Describe Frogs egg and give in detail the process of gastrulation in
frog.
14
Q.3 Answer the following
Capacitation. 07
Structure of hen's egg. 07
Page 1 of 2
SLR-RT 781
Q.4 Explain the following
Organogenesis. 05
Regeneration 05
Regulation of limb development 04
Q.5 Explain in short:
How anterior-posterior axis is specified in Drosophila? 07
Cell Apoptosis with reference to the type studied. 07
Q.6 Write short notes (any four): 14
Blastula of amphioxus
Vitellogenesis
Egg of mammal
Cortical reaction
Prevention of polyspermy
Epiboly.