Question

When the leaves are borne alternately one at each node, then the phyllotaxy is__________.

• A. Opposite
• B. Alternate
• C. Whorled
• D. None of the above

Answer 1

The correct option is B Alternate

• If two leaves arise on each node opposite to each other; This arrangement is called opposite phyllotaxy seen in leaves of plants like Guava and Jasmine.
• If one leaf arises from one node and next leaf arises at successive node in opposite/alternate direction; This arrangement is called alternative phyllotaxy seen in leaves of plants like mint, peepal and china rose.
• If more than one leaf is arranged at one node arranged in a whorl; This arrangement is called whorled phyllotaxy seen in leaves of plant like oleander (Nerium).
• Thus, Option B is correct, Leaves born alternatively one at each node is called Alternate phyllotaxy.