Question
How
many plants among China Rose, Ocimum, Sunflower, Mustard,
Alstonia, Guava, Calotropis and Nerium
(Oleander) have opposite phyllotaxy?
How many plants among China Rose, Ocimum, Sunflower, Mustard, Alstonia, Guava, Calotropis and Nerium (Oleander) have opposite phyllotaxy?
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Solution
The correct option is C Three
Arrangement
of leaves on the stem branches is called as phyllotaxy. There are 3
types of phyllotaxy present. These are opposite, whorled and spiral
or alternate. In alternate type, leaf arises at each node in an
alternate manner. Examples include china rose, sunflower, grass,
mustard. In opposite type, pair of leaves arise at each node and
are opposite to each other. Examples include Calotropis,
Ocimum, guava. In whorled type, more than two leaves arise at a node
and form a whorl. For example Alstonia, hydrilla, Nerium
(Oleander). Thus, the correct answer is 'Three.'
Arrangement of leaves on the stem branches is called as phyllotaxy. There are 3 types of phyllotaxy present. These are opposite, whorled and spiral or alternate. In alternate type, leaf arises at each node in an alternate manner. Examples include china rose, sunflower, grass, mustard. In opposite type, pair of leaves arise at each node and are opposite to each other. Examples include Calotropis, Ocimum, guava. In whorled type, more than two leaves arise at a node and form a whorl. For example Alstonia, hydrilla, Nerium (Oleander). Thus, the correct answer is 'Three.'
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