Which of the following is $NOT$ a secondary sexual characteristic in females?

Match the following and choose the correct answer:-

$A$. Implantation	$i$. Vagina
$B$. Capacitation	$ii$. Ovary
$C$. Folliculogenesis	$iii$. Uterus
$D$. Fertilisation	$iv$. Fallopian tube

$A$: Most birds possess only the left ovary and left oviduct for conveying the ovum released from the ovary.
$R$: The avian ovary does not form a corpus luteum from the ruptured ovarian follicle which undergoes rapid shrinkage.

Differentiate between the following:
$1.$ External reproductive characteristics of male and female.
$2.$ Internal reproductive characteristics of male and female.

Identify the incorrect statement.

Which of the following statements are correct regarding the female reproductive cycle?
$A$. In non-primate mammals,cyclical changes during reproduction are called the oestrus cycle.
$B$. The first menstrual cycle begins at puberty and is called menopause.
$C$. Lack of menstruation may be indicative of pregnancy.
$D$. Cyclic menstruation extends between menarche and menopause.
Choose the most appropriate answer from the options given below.