Question

Read the following matches

(i) Alstonia - whorled phyllotaxy

(ii) Calotropis - opposite and decussate phyllotaxy

(iii) Smilax - parallel venation

(iv) China rose - opposite-super posed phyllotaxy

(v) Sunflower - spiral phyllotaxy

Which of these are correct?

• A. (ii), (iii) and (iv)
• B. (ii), (iii), (iv) and (v)
• C. (i), (ii) and (v)
• D. (i), (ii) and (iv)

Answer 1

The correct option is C (i), (ii) and (v)

Alstonia - whorled phyllotaxy

Alstonia exhibits whorled phyllotaxy in which more than two leaves are present in a whorl at each node.

Calotropis - opposite and decussate phyllotaxy

Calotropis shows opposite decussate phyllotaxy in which two leaves are present at each node, placed opposite to each other. One pair of leaves is placed at right angle to the next upper or lower pair of leaves.

Sunflower - Spiral phyllotaxy

In sunflower the leaves are arranged in spiral phyllotaxy with a single leaf arising at each node.

Final answer
(d). (i), (ii) and (v)