D:-Fourth arch
Correct Answer:- Option-C

Question17:-The circumvallate papillae in the tongue are innervated by
nerve of arch.

A:-Glossopharyngeal nerve of fourth arch
B:-Vagus nerve of sixth arch
C:-Glossopharyngeal nerve of third arch
D:-Chorda tympani nerve of second arch
Correct Answer:- Option-C
Question18:-Olfactory epithelium develops from
A:-Ectoderm
B:-Neural crest
C:-Endoderm
D:-Mesoderm
Correct Answer:- Option-A
Question19:-All are derivatives of neural crest cells except
A:-Cranial and sensory ganglia
B:-Pharyngeal arch cartilages
C:-Retina
D:-Bulbar and conal ridges in heart
Correct Answer:- Option-C

Question20:-By the middle of the third week of intrauterine development,
intraembryonic mesoderm separates the ectoderm and endoderm at

A:-The oropharyngeal membrane
B:-The median plane cranial to the primitive node
C:-The cloacal membrane
D:-The primitive streak
Correct Answer:- Option-D
Question21:-All are autosomal recessive disorders except
A:-Occulocutaneous albinism
B:-Maple syrup urine disease
C:-Alkaptonuria
D:-Neurofibromatosis
Correct Answer:- Option-D

Question22:-Which Mendel's first law if inheritance explains the expression of
characters in the subsequent generation without its appearance in the first
generation when contrasting characters are crossed ?