Advertisements
Advertisements
प्रश्न
Give Reasons
Missing of menses is the first indication of pregnancy.
Advertisements
उत्तर
Because the endometrium of the uterus along with the unfertilized egg is given out in the form of menstrual flow.
APPEARS IN
संबंधित प्रश्न
‘A proper understanding of the menstrual cycle can help immensely in family planning.’ Do you agree with the statement? Provide reasons for your answer.
Find the wrongly matched pair.
Identify the phase of the menstrual cycle during which there is a peak in the level of progesterone.
Match the Columns.
| Column I | Column II | ||
| i. | Proliferative phase | a. | Breakdown of the endometrial lining |
| ii. | Secretory phase | b. | Follicular phase |
| iii. | Menstruation | c. | Luteal phase |
Identify the INCORRECT statement.
Corpus luteum produces ______.
Mainly which type of hormones control the menstrual cycle in human beings?
Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower.
Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.
Menstruation normally occurs once in ______.
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.
