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In Citrus, spine
Absent
Modified leaf blade
Arise from the first leaf of the axillary bud
The modified stipules
Explanation
In Citrus, spines arise from the first leaf of the axillary bud.
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Characteristics and functions of Leaf
Modifications of Leaf
Spines act as
Defensive structure
Climing organs
Reduce the rate of transpiration
Both 1 and 3
Spine act as both Defensive structures and also reduce the rate of transpiration.
In compound leaf
Stipules presenr at the base of the leaflets
Stipules present at the base of the rachis
Buds present in the axils of leaflets
None of the above
In Compound leaves, stipules present at the base of the rachis.
Select the correct answer with regard to modification of leaves
Spines in Casuarina
Phylloclades in Nepenthes
Trap leaves in Utricularia
Tendrils in Agave
From the given options, option C is correct. Utricularia has trap leaves. Trap leaves are also known as Insectivorous leaves or Carnivorous leaves.
Secondary rachii are modified into phyllodes in
Acacia melanoxylon
Limnophila
Selaginella
Parkinsonia
Secondary rachis is modified into green flattened winged structure performing photosynthesis called as a phyllode in Acacia melanoxylon, Parkinsonia. Hence option D is correct.
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