DETAILED ANSWERS GRADED
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Tissue - answer-A group of cells consisting of one or more cell types that together
perform a specialized function.
Organ - answer-Consists of several types of tissues that work together to carry out
particular functions.
Three Basic Plant organs - answer-1.) Roots 2.) Stems 3.) Leaves
Each organ is composed of 3 types of tissues - answer-1.) Dermal tissue 2.) vascular
tissue 3. Ground tissue.
Fibrous root - answer-A mat of generally thin roots spreading out below the soil surface.
This system is best adapted to shallow soils or regions where rainfall is light and does
not moisten the soil much below the surface layer.
Taproot - answer-The main vertical root
Adventitious roots - answer-A term describing a plant organ that grows in an unusual
location, such as roots arising from stems or leaves.
Absorption of water and minerals - answer-Occurs primarily near the tips of roots
Root hair - answer-Vast numbers of tiny root hairs increase the surface area. Is thin,
tubular extension of a root epidermal cell.
Terminal buds - answer-The bud located at the tip of a stem.
, Axillary buds - answer-a structure that has the potential to form a lateral shoot or
branch
Monocots, eudicots venation - answer-Monocots and eudicots differ in the arrangement
of veins, the vascular tissue. Monocots have parallel veins and eudicots have branching
veins
Dermal tissue system - answer-In nonwoody plants, this consists of the epidermis
Vascular tissue system - answer-carries out long distance transport of materials
between roots and shoots.
ground tissues - answer-Tissues that are neither dermal nor vascular.
Phloem - answer-transports organic nutrients from where they are made to where they
are needed
Xylem - answer-Conveys water and dissolved mineral upward from roots into the shoots
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Sclerenchyme - answer-Rigid because of thick secondary walls strengthened with
lignin. They are dead at functional maturity.
Sclereids - answer-are short and irregular in shape and have thick lignified secondary
walls.
Fibers - answer-long and slender and arranged in threads.