Cactus plant. Tip of a polka dot cactus plant (Opuntia microdasys). This cactus originates from Mexico. It grows up to 90 centimetres high and spreads nearly 2 metres wide if allowed. Cacti evolved in arid environments,and have tissues adapted to minimise water loss. Cactus leaves are reduced to narrow spines (white),and the plant surface is covered in a thick,waxy outer layer. Many cacti also have a means of storing water | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Lawry, Lawrence |
Taille de l’image : | 4152 px × 3371 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |