Types of Thorns

In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, ...

In 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.

What Plants Have Thorns? A: There are many plants that bear thorns; some of the most common are cacti and roses. Any plant with thorns should be handled with care to prevent injury.

The thorns or spines of cactus is actually the leaf of the cactus plant.Cactus has undergone adaptation. Usually cactus grown in dry area and there will be more evaporation takes place from leaves .So when leaf is present the water from the cactus plant totally will be get evaporised.Hence to avoid this cactus modified its leaf to thorns.

In 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.

Thorns are the sharp points on some plants and trees, for example on a rose bush. Tendrils are thin stems which grow on some plants so that they can attach themselves to supports such as walls or other plants.