Q5. Assertion: the corolla of china rose is gamopetalous. Reason: the bases of its petals are joined to the staminal tube. Are both true?
The assertion is false: the five petals are free (polypetalous) and only look united. The reason is true.
Q6. How many stigmas does a china rose flower have, and why?
Five, one for each of its five fused carpels.
Q7. Which placentation does NCERT give for china rose?
Axile (NCERT page 65).
Q8. How many pollen-sacs does one anther of china rose have, and a typical bilobed anther?
Two in china rose, whose anther is one-lobed; four in a typical bilobed anther, two per lobe (NCERT page 64).
Q9. Is the ovary of china rose superior or inferior?
Superior: NCERT gives china rose as a hypogynous flower (page 63).
Q10. What kind of hairs do young parts of many Malvaceae plants bear?
Star-shaped (stellate) hairs.