Morphology of Flowering Plants Question 13

13. How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (Oleander) have opposite phyllotaxy?

[NEET Kar. 2013]

(a) Two

(b) Three

(c) Four

(d) Five

Show Answer

Answer : b

Hints & Solutions

(b) Phyllotaxy is the pattern of arrangement of leaves on the stem or branch.

  • Ocimum, Guava, Calotropis $\rightarrow$ Opposite phyllotaxy
  • China rose, Sunflower, mustard $\rightarrow$ Alternate phyllotaxy
  • Alstonia, Nerium (Oleander) $\rightarrow$ whorled phyllotaxy