NEET2026BiologyChapterActual
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : In human females, hormones such as hCG, hPL and relaxin are produced only during pregnancy. Reason (R) : The placenta acts as an endocrine tissue and is the exclusive source of all these three hormones during pregnancy. In the light of the above statements, choose the most appropriate answer from
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
C. (A) is correct but (R) is not correct
Step-by-step solution
According to NCERT, hormones such as human chorionic gonadotropin (hCG), human placental lactogen (hPL), and relaxin are produced in women only during pregnancy. Thus, Assertion (A) is correct. The placenta acts as an endocrine tissue and produces hormones like hCG, hPL, estrogens, and progestogens. However, in the later phase of pregnancy, the hormone relaxin is secreted by the ovary, not the placenta. Therefore, the placenta is not the exclusive source of all these three hormones. Thus, Reason (R) is incorrect. A