Advertisements
Advertisements
Questions
A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.
Women experiences two major events in their life time one at menarche and the second at menopause. Mention the characteristics of both the events.
Advertisements
Solution
Menarche:
- It is the first menstrual flow in a girl’s life.
- Occurs between age 11 to 13 years.
- Marks the beginning of reproductive phase.
- Indicates onset of puberty and ovulation begins.
Menopause:
- It is the permanent cessation of menstrual cycles.
- Occurs between age 45 to 50 years.
- Ovarian follicles stop responding to pituitary hormones.
- Ovulation and menstruation cease; fertility ends.
- Estrogen levels fall, causing physical and psychological changes.
APPEARS IN
RELATED QUESTIONS
Describe the changes that occur in ovaries and uterus in human female during the reproductive cycle.
Explain the events that occur in a graafian follicle at the time of ovulation and thereafter.
the Biological/technical term for Complete stoppage of menstrual cycle in females
Give appropriate biological or technical terms for the following:
The onset of menstruation in a young girl
Differentiate between the following pair:
Menarche and menopause
Sketch the labelled diagram.
Menstrual cycle
Observe the figure and answer the questions given below.

a) What does the above figure indicate?
b) Which human organs are involved in this process?
c) Name the hormones responsible for this process.
d) After how many days these repetitive changes take place?
e) ‚A woman should stay away from others, as her body is impure during this process.‛ What is your opinion about this statement? Elaborate it.
How many pairs of testis are present in human male?
Describe the structure of a Graafian follicle.
Explain the ovarian cycle with its different phases.
What is the menstrual cycle?
What are the phases of the menstrual cycle? Indicate the changes in the ovary and uterus.
The following is the illustration of the sequence of ovarian events (a-i) in a human female.

Name the ovarian hormone and the pituitary hormone that have caused the above-mentioned events.
Detection of which hormone in urine is an indicator of pregnancy?
Lack of which hormone results in menstrual flow?
Identify the phase of the menstrual cycle during which there is a peak in the level of progesterone.
Calculate the number of spermatozoa produced by a single primary spermatocyte.
Choose the correct order of phases of the menstrual cycle.
All occur during follicular phase of menstrual cycle, EXCEPT
Luteal phase is also known as ____________.
Mainly which type of hormones control the menstrual cycle in human beings?
Level of which hormones are at their highest during the luteal phase (second half of the cycle) of the menstrual cycle?
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.

The peak observed in Subject 1 and 2 is due to ______
A biology student after studying the different levels of hormones during the menstrual cycle was comparing 2 subjects (Patients). A table was created after looking at the levels of hormones A and B for Subjects 1 and 2. Read the information in the table and answer the question that follows.
| HORMONE A | HORMONE B | |
| Subject 1 | Shows a peak on the 14th Day of the menstrual cycle. | Falls down during the luteal phase. |
| Subject 2 | Shows a peak on the 14th Day of the menstrual cycle. | The level is maintained high in the luteal phase. |
Which of the following statements is true about the subjects?
Which of the following events is not associated with ovulation in human females?
At which stage of the menstrual cycle, both LH and FSH are high?
Spermatogenesis is induced by ______.
Name these:
4 phases of the menstrual cycle.
Given below is a group of terms. In the group, one pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.
Follicular phase: 5-12 days:: Luteal phase : ______ days.
Match Column I and Column II with respect to the menstrual cycle.
| Column I | Column II |
|---|---|
| i. Menstrual phase | c. Secretion of inhibin |
| ii. Follicular phase | b. Development of the primary follicle |
| iii. Ovulatory phase | a. Rapid secretion of LH |
| iv. Secretory phase | d. Secretion of estrogen |
Choose the correct option.
