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

Options

(a) Two
(b) Three
(c) Four
(d) Five

Correct Answer:

Three

Explanation:

Phyllotaxy is the pattern of arrangement of leaves on the stem or branch.
Ocimum, Guava, Calotropis → Opposite phyllotaxy
China rose, Sunflower, Mustard → Alternate phyllotaxy
Alstonia, Nerium (Oleander) → Whorled phyllotaxy