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- #Structural Organisation in Animals and Plants
Thorns : Stem :: Spines :
Option: 1
Phyllode
Option: 2
Cladode
Option: 3
Leaf
Option: 4
Branch
Answers (1)
Leaf Spine: It is a pointed structure formed either due to modification of entire leaf or some part of it. It serves the function of protection.
- In Opuntia leaves of axillary branches are modified into spines.
- In Berberis entire leaf is modified into three spines.
- In Parkinsonia, Acacia and Zizyphus stipules are modified into spines.
- In Citrus first leaf of axillary branch modified in to spine.
-
Spines are modified leaves.
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