Read the following characteristics and identify the stem modification we are referring to.
(a) They develop from axillary or terminal buds.
(b) They help in climbing.
(c) They are slender, spirally coiled structures.

• A

  Phyllode in Australian Acacia

• B

  Tendril of grapevine

• C

  Tendril of pea

• D

  Thorns of Citrus