Plants are green because of a pigment called chlorophyll. Chlorophyll absorbs all colors of visible light except for green, which is reflected. Thus, the reflection of the green part of visible light is what causes plants to look green.Know More
Organelles called chloroplasts contain the pigment chlorophyll. Photosynthesis is the process of making food out of carbon dioxide, water and sunlight. All organisms capable of performing photosynthesis, except for the photosynthetic bacteria, contain chlorophyll. Two types of chlorophyll exist in green plants, with the most prevalent being chlorophyll-a. Chlorophyll-b also occurs in all plants, but in smaller amounts than chlorophyll-a.
Other energy-absorbing pigments also exist in plants. Carotenoids, the pigments that give carrots and fall leaves their orange color, absorb all colors of the visible spectrum except for orange, while lycopene gives tomatoes their red color.Learn More
A raphide crystal occurs in plant cells, and its main function is to repel animals away from plants. The crystals are shaped like needles, and are formed from calcium oxalate.Full Answer >
Osmosis occurs in plants to keep them from wilting. Plant cells have rigid but fully permeable cell walls, and osmosis creates enough pressure against the cell wall to keep the cell turgid. Thus, plant cells can absorb water via osmosis without danger of bursting. Because plants do not have a skeletal system, the pressure created by osmosis is the only way the plant can maintain structure.Full Answer >
Pea plants should be watered sparingly, but the soil should remain consistently moist without being saturated. The plant should be watered when the top inch of the soil is dry to the touch.Full Answer >
Ruda plants can be purchased online or in many local nurseries. As of 2014, Maggie's Herb Farm in St. Augustine, Fla., sells rue plants. Sandy Mush Herb Nursery sells the blue mound and jackman blue variations of rue in Leicester, N.C.Full Answer >