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Plant Processes
SOL 7.5
| Term | Definition |
|---|---|
| Photosynthesis | Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct. |
| Respiration | The action of breathing. |
| Stomata | Any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of a variable width that allows movement of gases in and out of the intercellular spaces. |
| Guard cells | Each of a pair of curved cells that surround a stoma, becoming larger or smaller according to the pressure within the cells. |
| Chlorophyll | Its molecule contains a magnesium held in a porphyrin ring. |
| Chloroplast | (in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place. |
| Light dependent reaction | Uses light energy to make two molecules needed for the next stage of photosynthesis. |
| Light independent reaction | Are chemical reactions that convert carbon dioxide and other compounds into glucose. |
| Energy Pyramid | Is a graphical model of energy flow in a community. |
| Producer | Is an organism, either a green plant or bacterium, which is part of the first level of a food chain. |
| Mitochondria | An organelle found in large numbers in most cells, in which the biochemical processes of respiration of energy production occur. |
| Autotrophs | an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. |
| Consumers | Are organisms that eat organisms from a different population. |
| Herbivore | A organism that only eat plants. |
| Omnivores | Eats both plants and animals. |
| Heterotrophs | A organism that cannot manufacture its own food and instead obtains its food and energy by taking in organic substances, usually plant or animal matter. |
| Carnivores | A animal that eats a diet consisting mainly of meat. |
| Decomposers | Are organisms that break down dead or decaying organisms, and in doing so, they carry out natural process of decompostion. |
| Spongy layer | a layer of loosely packed and irregularly shaped chlorophyll-bearing cells that fills the part of a leaf between the palisade layer and the lower epidermis -- called also spongy parenchyma, spongy tissue. |
| Palisade layer | a layer of columnar cells rich in chloroplasts found beneath the upper epidermis of foliage leaves. |
| raw materials | crude or processed material that can be converted by manufacture, processing, or combination into a new and useful product wheat. |
| Oxygen | a colorless, odorless, tasteless, gaseous chemical element that occurs free in the atmosphere, forming one fifth of its volume, and in combination in water, sandstone, limestone, etc. |
| Carbon dioxide | is a colorless, odorless gas found in our atmosphere. Its chemical formula is CO2, which means it is one carbon atom bonded to two oxygen atoms. |
| Glucose | is the main type of sugar in the blood and is the major source of energy for the body's cells. |
| Products | Is a substance that is formed as the result of a chemical reaction. |