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Get Answers to all your Questions
- #Reproduction
- #National Eligibility Cum Entrance Test - 2023
- #National Eligibility Cum Entrance Test
- #Medical
- #Class 12
- #Biology
Which of the following statements are correct regarding female reproductive cycle?
A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle.
B. First menstrual cycle begins at puberty and is called menopause.
C. Lack of menstruation may be indicative of pregnancy.
D. Cyclic menstruation extends between menarche and menopause.
Choose the most appropriate answer from the options given below:-
A and D only
A and B only
A, B and C only
A, C and D only
Answers (1)
The correct option is Option 4) A, C, and D only.
A. In non-primate mammals, cyclical changes during reproduction are indeed called the estrus cycle, not the menstrual cycle. The estrus cycle is characterized by the presence of an estrus phase, during which the female is sexually receptive.
B. The first menstrual cycle in females begins at puberty, marking the onset of reproductive capability. Menopause, on the other hand, refers to the cessation of menstrual cycles and reproductive function in women, typically occurring around the age of 45-55.
C. Lack of menstruation can be indicative of pregnancy. During pregnancy, menstruation ceases due to the hormonal changes that sustain the pregnancy.
D. Cyclic menstruation extends between menarche (the onset of the first menstrual cycle) and menopause (the cessation of menstrual cycles).
Therefore, statements A, C, and D are correct, while statement B is incorrect.
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