Q5. Write the floral formula of an actinomorphic, bisexual flower with 5 united sepals, 5 united petals, 5 free stamens and 2 fused carpels in an inferior ovary.
⊕ ⚥ K(5) C(5) A5 G(2), with a line above the G (symbols as on NCERT pages 67–68).
Q6. Assertion: a floral formula can show that stamens are attached to petals. Reason: a floral formula shows cohesion and adhesion within and between whorls. Are both true, and does the reason explain the assertion?
Both are true, and the reason explains the assertion (NCERT page 68).
Q7. What three things does a floral diagram show about the parts of a flower?
Their number, their arrangement, and the relation they have with one another (NCERT page 68).
Q8. Which family does NCERT’s Figure 5.16 represent?
Brassicaceae, the mustard family (NCERT page 68).
Q9. Why do botanists describe flowering plants in a fixed order and with standard terms?
So that each description is brief and comparable with others; floral characteristics form the basis of classification and identification of flowering plants (NCERT pages 67 and 69–70).
Q10. Mustard’s ovary starts one-chambered. Why does its floral diagram show two chambers?
A false septum forms and divides it; the placentation is parietal (NCERT page 65).