Saturday, May 22, 2010

Are there any other sources of energy besides the sun that give plants energy to grow?

its for a science project.. in french...

Are there any other sources of energy besides the sun that give plants energy to grow?
There are many species of plant that have no chlorophyll, and therefore must get their energy elsewhere. A division of plants known as "myco-heterotrophs" parasitize fungi by invading the fungal mycelium network and extracting energy intended for the fungus.





Similarly, some plants like Sandalwood, and Spanish Moss parasitize other plants. Sandalwood invades the root network of nearby trees and steals nutrients, Spanish most attaches to the branches of a tree and extracts nutrients.





Some plants are "chemosynthetic," which means they take in carbon dioxide, hydrogen gas, hydrogen sulfides, and other inorganic gasses and turn them into organic compounds that can be used for food.
Reply:Non-photosynthetic, or heterotrophic plants include parasites like mistletoe. These flowering plants get their food from host plants that do photosynthesis.


http://waynesword.palomar.edu/plnov99.ht...


http://www.parasiticplants.siu.edu/Relat...


http://www.sarracenia.com/faq/faq5970.ht...


http://en.wikipedia.org/wiki/Orchids


Nonphotosynthetic organism also include saprotrophs that digest once living material. These can be fungi but not all fungi are saprotrophs. However none of these fall in what is called the plant kingdom or embyophytes.


http://www.sarracenia.com/faq/faq5980.ht...


http://en.wikipedia.org/wiki/Saprotroph





Orchids once came in this category as there are some that live in parasitic relationships with fungi. Now it is known the fungus acts as an intermediary they are classed as myco-heterotrophs because a mycorrhizal fungus connects the parasitic plant with its host plant.





The Bird's-nest Orchid is non-photosynthetic. It attaches to a mycorrhizal fungus that in turn attaches to a photosynthetic plant in a symbiotic relationship.





Several groups of plants augment their nutrients by digesting insects when they live in nutrient poor places like bogs but they are not true heterotrophs like Monotropa uniflora


http://www.gflora.com/index.php?cmd=genu...


http://www.sarracenia.com/faq/faq1100.ht...


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