Biology
Assertion. The placenta is a vital organ during pregnancy, responsible for providing nutrients and oxygen to the developing foetus.
Reason. The placenta develops from the fusion of the zygote and the endometrial lining, forming a specialized tissue structure that facilitates the exchange of substances between the maternal and foetal bloodstreams.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Reproductive System
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Answer
Both A and R are True
Explanation
The placenta begins developing from the blastocyst shortly after implantation. The placenta connects to the fetus via the umbilical cord.
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Assertion. Oversecretion of insulin causes hyperglycemia or diabetes mellitus.
Reason. Oversecretion of insulin can lead to hypoglycemia by casuing excessive uptake of glucose from the blood into the cells, which in turn can lead to increased insulin resistance and ultimately result in hyperglycemia or diabetes mellitus.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
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Assertion. Cretinism is a condition which affects adults causing dwarfism and mental retardation.
Reason. Cretinism is a kind of hypothyroidism. This disease occurs due to the defective development, or early atrophy (degeneration), of the thyroid.
- Both A and R are True
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- A is True and R is False.
- A is False and R is True.
Assertion. Leydig cells produce oestrogen and progesterone.
Reason. Leydig cells are also called as interstitial cells which are located as packing tissues between the coils of seminiferous tubules.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion. Prostate gland pours an alkaline secretion which neutralizes the acidic pH of the vagina.
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- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.