unit 1 chapter 6 noteguide 1
DESCRIPTION
The Importance of Plants Without plants, life on earth ______________ exist Plants are the ______________ source of ______________ for humans and animalsTRANSCRIPT
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Plant Anatomy
Unit 1Chapter 6
Noteguide 1
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The Importance of Plants
• Without plants, life on earth ______________ exist
• Plants are the ______________ source of ______________ for humans and animals
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The Importance of Plants cont.
• Plants also:– Provide ______________ – Provide ______________ – Supply us with ______________ – Renew the air– ______________ down the wind– ______________ in place– Are a ______________ for wildlife– Furnish building materials and fuel
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Parts of the Plant
• Most plants are made up of four basic parts:– ______________– ______________– ______________– ______________(these
later become fruit or seeds)
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Roots
• Usually ______________ – not visible• Functions:– ______________ the plant and hold it ______________
*– ______________ water and minerals from the soil &
______________ them to the stem*– Store large quantities of ______________ *– Propagate or ______________ in some plants
* = essential to all plants
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Roots on the Inside
• Very ______________ to a stem
• Older roots of shrubs & trees have:– Phloem on the outside
(old phloem is bark)– Cambium layer– Xylem (wood) on the
inside
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• ______________– Carries manufactured food down to the root for food storage
• ______________– Carries water and minerals up to the stem
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Roots on the Outside• ______________ from a
stem• On a stem, the ______________ initiates growth• On a root, the ______________ initiates growth• Root cap continuously
makes ______________ that protect the root as it pushes into the soil
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Root External Structure• Behind the root cap are
______________ • Root hairs become
______________ that branch out as the root grows older
• Absorb ______________ and ______________ which are conducted up to the larger roots and the stem
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Roots as Crops
• Cash crops– Carrots– Beets– Radishes– Sweet Potatoes
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Root Propagation
• Plants with ______________
roots:– Dahlia– Peony– Sweet Potato
• Are propagated by ______________ the root clump or by rooting spouts from the root
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Types of Root Systems
Fibrous Root System vs. Tap Root System
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• Which root system is easier to transplant? Fibrous roots or tap roots?
• ___________________
• Why? • ___________________
___________________ ___________________ ___________________ ___________________
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• If a root loses to many __________________while being transplanted, the plant will ________________.
• Larger roots only __________________ water, nutrients, and food
• Root hairs _________________ from the ground
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Important “Root”words
• _____________________– All of the root parts of a single plant collectively
• _____________________ – First root sent from a germinating seed– Absorbs water and nutrients for growing seedling– Anchors seedling in the ground
• _____________________ – Small branches that form off of the primary root
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Important “Root”words
• _____________________ – Group of cells at the end of a root that protect it
from the coarse soil as it pushes through to grow• _____________________ – Roots that begin growth from a stem or leaf– Commonly found on corn plants
• _____________________ – Plants that will produce roots at the base of the
stem when a cutting is taken
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Important “Root”words
• _____________________ – Enlarged food-storage root with adventitious
shoots that develop– These shoots produce adventitious roots to
produce a new plant