Q4. Which hormones does NCERT say are produced in women only during pregnancy?
hCG, hPL and relaxin (NCERT page 37). This reports NCERT’s wording; it is not a biological absolute for hCG or relaxin, which can also be produced outside pregnancy.
Q5. List three things the placenta does for the embryo.
It supplies oxygen and nutrients, removes carbon dioxide and excretory or waste materials, and produces hormones such as hCG, hPL, estrogens and progestogens (NCERT page 37).
Q6. Assertion: the inner cell mass can give rise to all the tissues and organs of the body. Reason: it contains stem cells. Are both true, and does the reason explain the assertion?
Both are true, and the reason explains the assertion: NCERT says the inner cell mass contains stem cells which have the potency to give rise to all the tissues and organs (page 38).
Q7. In which month does NCERT place the first maternally felt fetal movements, and what else appears then?
In the fifth month, together with hair on the head (NCERT page 38). Fetal movements begin earlier than maternal perception; the NHS places first felt movement at roughly 16–24 gestational weeks.