Cacti produce their food through photosynthesis that occurs in their pads, which are modified stems. Evolution has modified their leaves into spines that provide shade for the pads and break up the wind to reduce evaporation through the skin of the stems.Continue Reading
Producing food in the arid desert region is not easy for cacti. They use a modified form of photosynthesis scientists call CAM photosynthesis. This process allows them to open the pores in their leaves to collect the carbon dioxide necessary for converting sunlight into glucose. They then close these pores and store the carbon dioxide internally until sunrise.
Cacti also have specialized root systems that allow them to gather moisture quickly from the limited amount of desert rain. The root system is broad but shallow. In some cacti, the first few drops of rain trigger the growth of fine roots to improve the plant's ability to absorb and store moisture; these roots dry up later. A waxy layer on the surface of the pads helps reduce evaporation of water.
The temperature inside a cactus plant can reach 70 degrees Fahrenheit without damaging the plant. As colder weather arrives, the cactus stores less water, and the internal moisture is converted to a thick mucus-like substance that helps the plant survive the cold.Learn more about Botany
Some characteristics of pteridophyta plants include reproduction through spores, leaves that provide energy through photosynthesis, specialized stems called rhizomes, and vascular systems that transport water and nutrients. The plant phylum pteridophyta consists entirely of ferns, including more than 12,000 individual species. Ferns grow in border areas where other plants may not survive, and these plants grow in deserts, on mountains and in moist forests.Full Answer >
Plants store food in the vertical shoot of their stems and roots. They also store water and other nutrients within their stems to be used at a later time.Full Answer >
Plant stems are multitaskers: they support the growth of leaves and buds and serve as transportation routes for water, food and minerals. Plant stems are among the most recognizable physical features of plants; they also hold leaves, buds and flowers upright and keep them from toppling over in heavy winds and rain. Although stems do not appear at first glance to be doing much of anything, plenty of activity takes place beneath their surfaces.Full Answer >
Glucose, the primary product of photosynthesis, is a sugar formed from carbon dioxide and water molecules that acts as the primary food source for green plants. A secondary product of the process, oxygen, is released into the atmosphere as waste.Full Answer >