Question
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Pregnancy is characterised by metabolic changes in the mother. Reason (R): During pregnancy, the level of thyroxine is increased in the maternal blood. In the light of the above statements, choose the most appropriate answer from the options given below:
Both (A) and (R) are True and (R) is the correct explanation of (A).
Both (A) and (R) are True but (R) is not the correct explanation of (A).
(A) is True but (R) is False.
(A) is False but (R) is True.
According to the text, during pregnancy, the levels of several hormones, including thyroxine, are increased several-folds in the maternal blood. It explicitly states that the 'increased production of these hormones is essential for supporting the fetal growth, metabolic changes in the mother and maintenance of pregnancy'. Since thyroxine is a key regulator of metabolism (Basal Metabolic Rate), its increased level explains the metabolic changes observed in the mother.
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Human Reproduction. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
More Human Reproduction Questions
Which one of the following is the most likely root cause of why menstruation is not taking place in a regularly cycling human female?
The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of A-F have been correctly identified?
Seminal plasma in humans is rich in:
Identify the human development stage and its correct site of occurrence in a normal pregnant woman:
Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of:
Capacitation occurs in:
Menstrual flow occurs due to the lack of:
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
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