Q5. Assertion: mustard stamens are tetradynamous. Reason: a mustard flower has four stamens, two long and two short. Are both true?
The assertion is true, but the reason is false: mustard has six stamens, four long and two short. Four stamens, two long and two short, are didynamous, as in tulsi (Ocimum, family Lamiaceae).
Q6. Which part of the mustard plant gives mustard oil?
The seeds.
Q7. How many sepals does a mustard flower have, and how are they arranged?
Four, free, in two whorls of two: K2+2 (NCERT Figure 5.16, page 67).
Q8. What is the inflorescence of the mustard family?
A raceme.
Q9. Which two plants does NCERT give for parietal placentation, and which of them has a false septum?
Mustard and Argemone (NCERT page 65); only mustard has the false septum.
Q10. Are mustard leaves stipulate or exstipulate?
Exstipulate.