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प्रश्न
Answer the following type of question Assertion (A) and Reason (R).
(A) - Ovulation is the release of the ovum from the Graafian follicle.
(R) - It occurs during the follicular phase of the menstrual cycle.
विकल्प
A and R are true, R is the correct explanation of A.
A and R are true, R is not the correct explanation of A.
A is true, R is false.
Both A and R are false.
उत्तर
A is true, R is false.
संबंधित प्रश्न
Mention one significant difference between Hormones of ovulatory phase and hormones of luteal phase
Give appropriate biological or technical terms for the following:
The onset of menstruation in a young girl
Explain the changes that occur in the ovary and uterus during menstrual cycle in human females. Mention the influence of pituitary and ovarian hormones in bringing these changes.
Draw a neat and well-labeled diagram showing T.S. of the ovary and describe the menstrual cycle in human females.
Briefly describe the secretory phase of the menstrual cycle.
Describe the phases of the menstrual cycle and their hormonal control.
Expand the acronym.
FSH
Explain the various phases of the menstrual cycle.
Which one of the following events occurs during the secretory phase of the menstrual cycle?
How long does the secretory phase of the menstrual cycle last?
Calculate the number of spermatozoa produced by a single primary spermatocyte.
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 structure in the ovary will remain functional in subject 2?
About which day in a normal human menstrual cycle does rapid secretion of LH (Popularly called LH Surge) normally occurs?
Why are menstrual cycles absent during pregnancy?
In the figure given below, parts A and B show the level of hormones which influence the menstrual cycle. Study the figure and answer the questions that follow:
- Name the organs which secrete the hormones represented in parts A and B.
- State the impact of the hormones in part B on the uterus of the human female during 6 to 15 days of the menstrual cycle.
Complete the table:
| Number | Type | No. of pairs | Region |
| C1C8 | Cervical | ______ | Neck |
| T1T12 | ______ | 12 pairs | ______ |
| L1L5 | Lumbar | ______ | Lower back |
| S1S5 | ______ | 5 pairs | ______ |
| CO1 | Coccygeal | ______ | ______ |
Given below is the diagram depicting the menstrual cycle in human beings. Study it carefully and answer the questions that follow.
- Which phases are indicated by ‘C’ and ‘D’?
- Name the structures labelled ‘F’. What is its role?
- Explain the changes in the level of progesterone during phases ‘C’ and ‘D’.
- Which hormone present in the urine confirms pregnancy in human beings?
- Identify the structure labelled ‘E’. Name the hormone released by it.
Give a reason for the following:
The second half of the menstrual cycle is called the luteal phase as well as the secretory phase.
The onset of menstruation in a human female is called ______.
