Question

The onset of menstruation in the females is termed :

• A. Ovulation
• B. Menarche
• C. Menopause
• D. Parthenogenesis

Answer 1

The correct option is B

Menarche

The correct option is B:

Explanation of the correct option:

1. Menarche is the first menstruation of the human female on the attainment of puberty.
2. The attainment of puberty occurs at about 13 years of age.

Explanation of the incorrect option:

Option A:

1. Every 28 days, the ovary releases an ovum or egg cell, which is known as ovulation.
2. In most cycles, only one egg is released.
3. Ovulation occurs 10 to 12 days following the first day of menstruation.

Option C:

1. Menopause is the progressive cessation of menstruation.
2. The function of the ovaries and the generation of oestrogen decreases in women when they approach their 40s.

Option D:

1. The spontaneous formation of an embryo from an unfertilized egg cell is known as parthenogenesis.
2. Parthenogenesis can be found in a wide range of plant and animal species.

Final answer:

The onset of menstruation in females is termed Menarche.