NEET BIOLOGY

Detailed explanation-1: -In whorled phyllotaxy more than two leaves arise from the node. It is seen in Alstonia. It also shows simple reticulate venation. Thus, the correct answer is ‘Alstonia.

Detailed explanation-2: -Phyllotaxy is an arrangement in which the leaves arrange themselves on the branches. Alstonia has a whorled phyllotaxy. In whorled phyllotaxy, the two or more leaves originate from a single node, and form a whorl.

Detailed explanation-3: -Phyllotaxy is the pattern of arrangement of leaves on the stem or branch. If more than two leaves arise at a node and form a whorl, the phyllotaxy is called whorled, as in Alstonia.

Detailed explanation-4: -Whorled-more than two leaves arise at each node and form a whorl. Example: alstonia.

Detailed explanation-5: -The plants that show opposite phyllotaxy may be weeds, aromatic herbs, or even common fruit-bearing trees. Complete answer: Out of China Rose, Ocimum, Sunflower, Mustard, Alstonia, Guava, Calotropis, and Nerium, only three plants show opposite phyllotaxy.