Nutrition
Opuntia humifusa contains chloroplasts
which enable it to undergo photosynthesis to produce energy. (Click
here to learn about
another photosynthetic plant-The Sunflower) In addition to
photosynthesis, this plant also absorbs nutrients through its root system.
Water and nutrients are absorbed by the roots and distributed throughout the
plant via the plants extensive vascular system/tissues. Water and minerals
are transported through the plant by the xylem and nutrients such as glucose
are transported through the plant by the phloem. The xylem and phloem are
two of the main vascular tissues in this plant. The prickly pear also
possesses stomata, which regulate the flow of gasses and water into and out
of the plant. Nutrients are stored in the cactus in the form of glucose and
this plant also has a high capacity for water storage due to
the fact that it grows best in arid environments. Read more about this under
adaptations.