(A) Phyllotaxy is the pattern of arrangement of leaves on the stem or branch.In $Alstonia$,more than two leaves arise at a node and form a whorl,which

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(A) Phyllotaxy is the pattern of arrangement of leaves on the stem or branch.In $Alstonia$,more than two leaves arise at a node and form a whorl,which is known as whorled phyllotaxy.Therefore,the correct option is $A$.

Class 11 Biology Morphology of Flowering Plants Leaf

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Alstonia shows.

A
Whorled phyllotaxy
B
Alternate phyllotaxy
C
Opposite phyllotaxy
D
Parallel venation

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Morphology of Flowering Plants

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Leaf

Which of the following dicotyledonous plants exhibits parallel venation?

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Alstonia shows.

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Which of the following dicotyledonous plants exhibits parallel venation?

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