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Organ Systems in Plants

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by Hani Ali on 7 February 2013

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Transcript of Organ Systems in Plants

INTRODUCTION FROM ROOT TO LEAF PULLING AND PUSHING DEFINITIONS FUN IDEA CONNECTING THE SYSTEMS The role of tissues in plant is to transport nutrients. Inside plants there are two types of tissue that connect the root system and the shoot system together, the PHLEOM TISSUE and THE XYLEM TISSUE. These tissues usually occur together, along the stems and roots of the plant. Plants do not need to move. Instead they obtain food by PHOTOSYNTHESIS, using carbon dioxide in the air and water in the soil. They get these materials with their leaves in the air and their roots in the soil. ORGAN SYSTEMS IN PLANTS According to the particle theory, individual particles of water are held together by means of attraction, which makes the water network behave as a single unit. When osmosis happens in the root hairs, it pushes water columns up the plant. Meanwhile at the same time water loss from transpiration pulls water up the xylem tissue from the roots. Bot these actions are fundamental to raise water up to the top of tall plants (trees.) VASCULAR TISSUES- A tissue in plants that connects the root system and the shoot system together.
PHLEOM TISSUE- In a plant, the tissue that transports sugar from the leaves to the rest of the cell.
XYLEM TISSUE- In a plant, the tissue that transports minerals though the plant from the root hairs.
ROOT HAIRS- On a plant root, a extension a single epidermal cell. Water enters a root hair through osmosis.
PALISADE CELLS- In a leaf, a layer of cells filled with chloroplast.
STOMATA (STOMA)- Tiny openings in a leaf that let air in.
GUARD CELLS- In a leaf, cells that surround stomata.
TRANSPIRATION- The loss of water from a plant using evaporation.
PHOTOSYNTHESIS- The process in which plants release oxygen and take carbon-dioxide. Light is used as a source of energy. What you need: Two leafy stalks of celery, beaker, red food coloring, sharp knife and a cutting board.
MY SCIENCE PROJECT Plants have less types of tissue and organs then animals. Unlike animals, plants do not need sense type organs like eyes or ears to find food. They also don't need a digestive system to break down food into small particles for cells. Plants also don't need nervous system to send signals and to control movement. NERVOUS SYSTEM DIGESTIVE SYSTEM SENSE TYPE ORGANS The ROOT HAIRS help in the process of receiving water and minerals. these hairs are extensions of a epidermal cells. Water enters the root hairs by osmosis. This process is the first level of organization for plants- the cells.How do plants in water get air you ask? Easy. The root tissues in a plant in water have large air spaces in them. It's just that simple. How about plants that grow high up in the trees how are they supposed to get water. Their root tissues are adapted to suck in the moisture from the air. Plants only have two main organ system; the root system and the shoot system. The purpose of the root system is to obtain water and minerals from the soil and to act as a wait for the plant not to fall out. The shoot system's purpose is to produce food for the plant. In some occasions plants that make flower have a third system, the reproduction system. The main organ for the reproductive system is the flowers. From the root hairs water travels to all the cells until it reaches the xylem tissue. As more water enters the root hairs, it creates pressure that pushes water up the plant through the xylem tissues. This is the second level of organization. XYLEM TISSUE Most plants need a large supply of water. Plants need water to make sugars for photosynthesis. They get water from the soil. The ROOT HAIRS help in the process of receiving water and minerals. these hairs are extensions of a epidermal cells. Water enters the root hairs by OSMOSIS. This process is the first level of organization for plants- the cells. OSMOSIS OF PLANTS Water from the xylem tissue is passed to the stems and the leaves. Leaves are the plant's food making organs. - the third level of organization.
Most photosynthesis takes place in the PALISADE CELLS. STOMATA (singular STOMA) are small openings in a leaf that let air in the leaf to provide the oxygen the plant needs for respiration and the carbon-dioxide needed for photosynthesis. Surrounding each stoma are GUARD CELLS, guard cells can expand to close the stoma.- The fourth level of organization.
Instead of circulating through the plant the water exits the plant through transpiration. ORGAN ADAPTATIONS IN PLANTS STEPS:
1. Take the two leafy celery that are about the same length.
2. Remove all leaves from one celery.
3. Put both celery stalks in the beaker with food coloring and water.
4.Leave beaker under sun light for at least three hours.
5.Place the celery on the cutting board and cut across the stems at short intervals to see how far the water has risen up the stalk. CAUTION: All cutting must be done with adult super vision.
6. Based on what you see what can you say about the comparison with leaves and transpiration.
7.Have fun!!!!
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