Question

Study the given figure and identify the kind of phyllotaxy.

• A. (i) - Whorled, (ii) - Opposite, (iii) - Alternate
• B. (i) - Alternate, (ii) - Opposite, (iii) - Whorled
• C. (i) - Opposite, (ii) - Alternate, (iii) - Whorled
• D. (i) - Opposite, (ii) - Whorled, (iii) - Alternate

Answer 1

Answer: (B)

(i) - Alternate, (ii) - Opposite, (iii) - Whorled

• Phyllotaxy is the arrangement of leaves on the stem.
• In opposite phyllotaxy, the two leaves present at each node are always opposite to one another. In such cases, when looked from the top, all the leaves will be found to be arranged along four vertical rows. This mainly appears in Calotropis, Ixora etc.
• Alternate phyllotaxy is the common type of phyllotaxy. In such arrangement a single leaf arises from single node in alternate manner, e.g., China rose, Mustard, Sunflower, etc.
• Whorled phyllotaxy: In such arrangement two or more leaves are arising from a single node e.g., Alstonia.
• So,the correct answer is " (i) - Alternate, (ii) - Opposite, (iii) - Whorled ".