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hort 1 14.01

Major Plant Parts

Leaf stalk or part that connects leaf to stem. Petiole
The larg, flat part of a leaf. Blade
The large center vein. Midrib
The structural framework of leaf. Veins
The edge of leaf. Margin
Skin of the leaf that prevents the loss of too much moisture. Upper and lower epidermis
Small openings under the leaf for breathing or transpiration. Stomates
Open and close stomates. Guard cells
Small green particles that contain chlorophyll, give leaves their green color and are necessary for photosynthesis. Chloroplasts
Breathing pores. Lenticels
Show where terminal buds have been located. Bud scale scars
Show where leaves were attached. Leaf scars
Bud on end of stem. Terminal bud
Bud on side of stem. Axillary or lateral bud
Tissue that transports water and nutrients up from roots to stems and leaves. Xylem
Tissue that transport food down from leaves to roots. Phloem
Thin, green, activly growing tissue located between bark and wood and prouces all new stem cells. Cambium
Old inactive phloem. Bark
Old inactive xylem. Heartwood
New active xylem. Sapwood
Plant stems have a vascular bundles that contain both xylem and phloem in each bundle - ex. grasses, corn Monocots
plant stems have phlome layer and xylome layer seperated by cambium - ex. trees Dicots
Indicates growth of new cellsalso protects tip. Root cap
Absorb moisture(water) and minerals. Root hair
The outer layer and carries food down the root. Pholem
The inner layer an d carries water and minerals up to the stem. Xylome
Many branched shallow roots, are easier to transplant. Fibrous
Long root with few branched ones, are more difficult to transplant. Tap
Develop into seeds and fruits. Flowers
Green parts that cover and protect flower bud before it opens. Sepals
Are really leaves that are modified to attract insects for flower pollination, the pretty part that we call flowers. Petals
The male flower parts. Stamens
Short stalk that holds up the anther. Filament
A sac-like structure that contians pollen, the male sex cells. Anther
The female parts. Pistil
The eggs or female sex cells that becomeseed if fertilized. Ovules
if fertilized becomes a fruit or seed coat Ovary
holds up the stigma and connects it to the ovary Style
sticky part on top of style where insects leave pollen Stigma
has both male and female parts Complete flower
has only male or female parts Incomplete flower
Created by: wmhill



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