WebIn Opuntia the flattened, thick and fleshy stem is segmented or jointed (Fig. 5.48). Each segment develops in the axil of a caducous leaf which falls down and leaves behind a scar. The segment may possess flowers and fruits. It bears many raised areas called areoles. An areole is actually a node. WebMar 29, 2009 · Many Euphorbias are spiny and have thick, stout bodies, or are columnar, frequently leafless and are roughly similar in appearance to many cactus species. There is even a species of Euphorbia called …

Which of the following groups of plants have underground stems?

WebIn plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes ), are hard, rigid extensions or modifications of leaves, roots, stems or buds with sharp, stiff ends, and generally serve the same function: physically deterring animals from eating the plant material. ipcc emissions reduction 2030

In Opuntia, the stem is modified into - Toppr

WebEx- Opuntia, Casuriana, Euphorbia and Cactus. -Cladode: Phylloclade usually having one or two internodes long and succulent is called as cladode. Ex- Asparagus and Ruscus. … WebOpuntia littoralis is > 30% relative cover as a dominant or co-dominant with other coastal sage scrub species (Evens and San 2005, Klein and Evens 2005). Opuntia littoralis, Cylindropuntia prolifera and/or O. oricola) are > 30% relative cover in the shrub layer, or may be as low as 20% relative cover if the absolute cover is more than one-third ... WebSep 5, 2024 · C. Opuntia and Euphorbia are found into arid regions. They contain chlotophyll in their stem and carry out photosynthesis D. Stem tendrils are found in ground and grapevines that are slender and spirally coiled and help plants to climb. class-11; morphology-of-flowering-plants; ipcc earth science