In vivo fertilisation involves the fertilisation that takes place
In the laboratory
In the uterus
Outside the uterus
Either $(a)$ or $(b)$
Female condoms are called
Presently, the world population doubles after every
In which one of the following the birth rate is high & death rate is normal
Match the following columns
Column-I | Column- II |
$(A)$ Pill | $(1)$ Intra uterine device |
$(B)$ Condom | $(2)$ Prevents ovulation |
$(C)$ Vasectomy | $(3)$ Prevents sperms from reaching to cervix |
$(D)$ Cu - T | $(4)$ Semen contains no sperms |
Cause of decline of population in $1927$ was