M.Sc. (Semester II) (CBCS) Examination Mar/Apr-2018
Zoology
DEVELOPMENTAL BIOLOGY
Time: 2½ Hours
Max. Marks: 70
Instructions: Question number 2 and 6 are compulsory. Attempt any two from Question No. 4 and 5.
Q.1
Rewrite the following sentences by choosing the most correct alternative given below:-
14
The eggs of mammals are
Mesolecithal
Isolecithal
Telolecithal
Centrolecithal
is the study of aging.
Gerontology
Pediatrics
Demography
Episiotomy
Acrosome is derived from
Blastocyst
Gastrula
Ectoderm
Golgiapparatus
is cell division without growth.
Cleavage
Fertilization
Development
Differentiation
In amphioxus, the zygote undergoes cleavage forming solid ball of cells of uniform size, called a
coelom
blastula
gastrula
morula
Skin and nervous system develops from the
ectoderm
mesoderm
endoderm
portions of all of 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
Q.2
Describe structure of hen's egg. Add a note on the process of gastrulation in Chick.
14
Q.3
Answer the following.
Cleavage patterns in Frog.
07
Neurogenesis.
07
Q.4
Explain the following.
Organogenesis
05
Regeneration
05
Epiboly
04
Q.5
Explain in short.
How is anterior posterior axis developed in chordates?
07
Cell Apoptosis with reference to the types studied.
07
Page 2 of 2
SLR-UT-622
Q.6
Write short notes on any four of the following:
14
Blastula of amphioxus
Vitellogenesis
Egg of amphioxus
Cortical reaction
Prevention of polyspermy
Regulation of limb development