Name the modification of stem in
a) Euphorbia & Tridax
b) Jasmine & Mentha
Answers
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the modification of stem in
Euphorbia
---> modifications is for the photosynthesis Modification of stems for photosynthesis: Some plants of arid regions modify their stems into flattened (Opuntia), or fleshy cylindrical (Euphorbia) structures. They contain chlorophyll and carry out photosynthesis.
Tridax
--> Underground stem modifications. ... Example: Portulaca, Tridax, Lindenbergia.
Modified stems that grow horizontally underground are either rhizomes, from which vertical shoots grow, or fleshier, food-storing corms. New plants can arise from the nodes of stolons and runners (an aboveground stolon): stems
Jasmine
--> It is a weak lateral branch that arises from the base of main stem. After growing aerially for some time it bends downwards to touch the ground, where its terminal bud gives rise to a new shoot and adventitious roots. The common stolon bearing plants are Jasmine, Colocasia, and Vellisneria etc.
Mentha
--> Modifications of Stem: Underground, Sub-aerial and Aerial Modification ... Natural stolons like this are found in Mentha sp. and some plants of the Rosaceae .