Question

Fertilisation occurs once in a month . Comment

Answer 1

Fertilization occurs once in a month. Comment.


Fusion of male gamete sperm and female gamete egg in fallopian tube (oviduct) is called as fertilization. ... Ovulation is release of ovum from ovary into oviduct and takes place only once in a month i.e. 14th day of menstrual cycle.

Answer 2

$\underline{\bf{Correct \: Question:-}}$

$\rm \: How \: does \: fertilisation \: take \: place? \\\rm \: Fertilisation \: occurs \: once \: in \: a \: month.\\\rm \: Comment.$

$\underline{\bf{Answer:-}}$

$\bf{Fertilistion} \: \rm \: In \: human \: beings, \: the \: sperms \: produced\\\rm \: in \: the \: testis \: of \: males \: are \: introduced \: into \: the \: vagina \: of\\\rm \: the \: woman \: through \: penis \: during \: copulation. \: The\\\rm \: sperms \: are \: highly \: active \: and \: mobile \: and \: thus \: move \: up\\\rm \: through \: cervix \: into \: the \: uterus. \: From \: uterus, \: sperms\\\rm \: pass \: into \: the \: oviducts.$

$\rm \: The \: oviduct \: contains \: an \: ovum \: \\\rm \: released \: by \: the \: ovum \: during \: ovulation.\\\rm \: Millions \: of \: sperms \: are \: released \: into \: the\\\rm \: vagina \: at \: one \: time, \: but \: only \: one \: sperm\\\rm \: fuses \: with \: the \: ovum \: in. \: the \: oviduct \: to\\\rm \: form \: a \: zygote. \: This \: is \: called \: \bf{fertilisation}$

$\rm \: Fertilisation \: can \: occur \: only \: once \: in \: a \: month \: because\\\rm \: the \: ovary \: releases \: just \: one \: mature \: egg\: every \: month\\\rm \: during \: a \: menstrual \: cycle \: (around \: 14th \: day).$