Neonatal period extends from birth to ……month/s.
a) one
b) two
c) three
d) four
Infancy begins at one month and continues to…….year/s.
a) one
b) two
c) three
d) four
Adolescence begins at around…….years.
a) 2-3
b) 5-7
c) 10-12
d) 12-13
The process of aging is called ……
a) adolescence
b) senescence
c) puberty
d) infancy
The study of aging is called…….
a) embryology
b) angiology
c) gerontology
d) myology
Fraternal twins result from the fertilization of…….
a) one ovum by one sperm
b) one ovum by two sperms
c) two ova by two sperms
d) two ova by one sperm
