The type of phyllotaxy found in calotropis is

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  1. Alternate
  2. Opposite decussate
  3. Opposite superposed
  4. Ternate

Answer (Detailed Solution Below)

Option 2 : Opposite decussate
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Detailed Solution

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The correct answer is Opposite decussate.

 Key Points

  • Phyllotaxy is the arrangement of leaves on a plant stem. In the case of Calotropis (a genus of flowering plants in the dogbane family), the phyllotaxy is opposite decussate.
  • In an opposite decussate arrangement, pairs of leaves are arranged at right angles to the pair above or below them on the stem.
  • This type of leaf arrangement is fairly common in many plant species.

 Additional Information

  • Alternate phyllotaxy is where there is only one leaf per node and they alternate sides as you move along the stem.
  • Opposite superposed is where two leaves arise at the same level but directly above the pair of leaves in the next node below.
  • Ternate phyllotaxy is where three leaves are arranged at each node.

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