Test Preparation on Reproductive health - Biology Test Series for NEET - 2020

(c) World Health Organisation (W.H.O.) has defined
reproductive health as a total well being in physical,
emotional, behavioural and social aspects of
reproduction.

(c) Two primary factors for the increase in human
population are :
(i) Decrease in death rate, particularly maternal
mortality rate (MMR) and infant mortality rate (IMR)
and (ii) Increase in longevity.

(b) If number of individuals in pre-reproductive and
reproductive group are almost same then in future
population size will remain unchanged i.e. zero
population. Now a days it is most desired trend in the
world due to over expanding population and depleting
resources.

(a) The ratio of various age groups is very important for
future aspects of population. Three major age groups in
any population are :
– Pre-reproductive (Juvenile or dependent phase)
– Reproductive (Adult phase)
– Post reproductive (Old age)

(b) Sex ratio is defined as the number of females per
thousand males in a country or state. Sex composition
is affected by three factors.
(i) Differentials in male-female ratio at birth.
(ii) Differentials in Mortality conditions of males and
females.
(iii) Sex-selective migration.