Glossary of 5th grade science chapter 1 topic2

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

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