Question

O
UWhich o
fertilization
the following?
a) Cell infected with virusestimmune cells
b) Do not produce an amniotic ege
have external fertilization
c) Cancer cells o d) Cell with D A damage Lay erg are externaltecilizers
art in Fishes is -- chambered:
d) None of the above
e Chambered b) Three Chambered (8. After a sperm has penetrated an ovum in
c) Four Chambered d) Five Chambered the process of fertilization, entry of
umber of aortic arches in cartilaginous further sperms is prevented by:
fishes are:
a) Development of the vitelline
a) Two pairs
Four pairs
membrane
c) Five pairs
d) None of these b) Development of pigment coat
(Sin humans, fertilization occurs in the . & s Condensation of yolk
implantation occurs of the zygote occurs d) Formation of fertilization
in the
membrane
Somniferous tubules; Uterus
9. Cranial nerves in Cyclostomes are:
b) Vagina; Oviduct
a) 4-6 pairs
86-8 pairs
c) Oviduct; Uterus d) Urethra; Uterus c) 8-10 pairs o d) 10-12 pairs
6. Which of the following is a major difference
between spermatogenesis and oogenesis? 10 Which of the following acts as
a) Spermatogenesis involves meiosis, and Thermoreceptors in Scoliodon (dog fish).
oogenesis involves mitosis
a) Olfactory sac
b) Spermatogenesis is continuous, but b) Neuromast organs
oogenesis is variable
c) Lateral Line System
d) Spermatogenesis produces fewer games - Ampullae of Lorenzini
per precursor cell than oogenesis 1D Viralor bacterial infections of placenta are
w All of these are significant differences known as:
between oogenesis & spermatogenesis a) Syphilis
Placentitis​

Answer 1

I can't understand the question and it's numbering