Question

• (1)Where does the development of the Embryo takes place in Humans?
• (2)Differentiate between:-
(a)Zygote and Foetus
(b)Internal fertilisation and External fertilisation
(c)Oviparous and Viviparous animals
• (3)What is Menstruation? Why it occurs?
• (4)Define Menarche and Menopause.

Answer 1

Answer:

Menarche: Menarche is the medical term for a woman's first menstruation, commonly known as her first period. Menstruation is the monthly shedding of the uterine wall. It typically occurs when girls are between the age of 9 and 15 years old. For the first several years, menstrual bleeding may be inconsistent and irregular. Girls in their early teens are likely to have irregular menstrual cycles, resulting in irregular ovulation. 

Menopause; It is a stage of a woman's life characterized by the end of her menstrual cycle, and it marks the end of her child-bearing years. As a result of these biological changes, women often experience a number of different symptoms for a period of time, though they eventually subside.

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Answer 2

Answer:

1 in uterus  4 menarche is the first mensturation and menopause is the age where a woman stop giving birth

Explanation: