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29 Cards in this Set
- Front
- Back
root cap
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thin covering that protects the root tip as it grows into ground
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epidermis
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the outermost layer of the plant
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cortex
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the layer just inside the epidermis where food is stored
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xylem
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tissue through which water and minerals move UP through a plant
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phloem
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tissue through which food from leaves moves DOWN through a plant
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cambium
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the layer that separates the xylem and the phloem and where new xylem and phloem cells are made
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chloroplast
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the "food factory" of the plant where the chlorophyll is found
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transpiration
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the process of water being lost from the leaves through the stoma and being replaced by water moving up through the plant
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purposes of roots
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hold plant in ground
draw water and minerals from ground can be eaten as food by animals |
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taproot
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one large root - like a carrot
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fibrous roots
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thin hairy branching roots like - grass has
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aerial roots
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never touch the ground - like plants that hang in trees in rainforest
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prop root
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grow like fingers in the ground to hold the plant up like - corn
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two types of stems
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woody and soft
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purpose of stems
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support leaves and flowers contain the parts of plant that transport water and minerals up from ground and food down from leaves
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two types of leaves
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simple and compound
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cuticle
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waxy coating on leaf that helps keep water from leaving
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stomata
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tiny pores on bottom of leaf that let air in so water can evaporate
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guard cells
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these cells open and close the stomata
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petiole
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the part of the leaf that connects it to the plant
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three things plants need to grow and live
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water, sunlight, carbon dioxide
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veins
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transport water and minerals through leaf and food created in photosynthesis from the leaf
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photosynthesis
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process that a plant uses sunlight to make food
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respiration
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the release of energy from food (sugar)
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what is needed for photosyntheis
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water and carbon dioxide join in the presense of sunlight and chlorophyll to make sugar and oxygen
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respiration
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the release of the trapped energy in the sugars made during photosynthesis
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why do leaves change color in fall
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because when it gets colder the leaves stop making chlorophyll.
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how is water moved through a plant
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taken in through root hairs
passes through cortex to xylem and travels up released through leaves |
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How do plants help the air
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plants release oxygen as waste during photosynthesis
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