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Questions  

Read the following characteristics and identify the stem modification we are referring to:
(a) Found in plants of arid regions.
(b) Stems modify into fleshy cylindrical structures.
(c) These structures contain chlorophyll

a
Phyllode in Australian Acacia
b
Phylloclade in Euphorbia
c
Phylloclade in Opuntia
d
Thorns of Citrus

detailed solution

Correct option is B

Phylloclade is found in plants of arid regions. Stems modify into fleshy cylindrical structures in Euphorbia. These structures contain chlorophyll and carry out photosynthesis. Opuntia has a flattened phylloclade.

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