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USABO Plant Form and Function Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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USABO Plant Form and Function Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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  • June 20, 2024
  • 7
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • usabo plant form and function questions with 100

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USABO Plant Form and Function
root system - ANS-the entire set of plant roots that anchor the plant, absorb and
transport minerals and water, and store food

shoot system - ANS-the aerial portion of a plant body, consisting of stems, leaves, and
(in angiosperms) flowers

photosynthate - ANS-a sugar or other product of photosynthesis

primary root - ANS-the first root (and organ) that emerges from a germinating seed

lateral root - ANS-a root that develops from the pericycle of an established root

taproot - ANS-a main vertical root that develops from the primary root (in eudicots) and
gives rise to lateral roots; enables the plant to grow taller by preventing toppling

root hair - ANS-a tiny extension of a root epidermal cell, growing just behind the root tip
and increasing surface area for absorption of water and minerals

adventitious root - ANS-a root that grows from an unexpected region of the plant, such
as from a stem or leaf; characteristic of a fibrous root system

buttress root - ANS-a large, wide aerial root that provides architectural support to a
shallowly-rooted tree

prop root - ANS-an aerial, adventitious root that supports tall, top-heavy plants (e.g.
maize)

pneumatophore - ANS-an aerial root produced by mangroves and other swamp plants
specialized for gaseous exchange

stem - ANS-a vascular plant organ consisting of an alternating system of nodes and
internodes that support the leaves and reproductive structures

node - ANS-a point along the stem of a plant at which leaves are attached

internode - ANS-a segment of a plant stem between the points where leaves are
attached

, apical bud - ANS-a bud at the tip of a plant stem; also called a terminal bud

axillary bud - ANS-a structure that has the potential to form a lateral shoot or branch;
appears in the angle formed between a leaf and a stem

rhizome - ANS-a continuously growing horizontal underground stem which puts out
lateral shoots and adventitious roots at intervals

stolon - ANS-a creeping horizontal plant stem or runner that takes root at points along
its length to form new plants

tuber - ANS-an enlarged end of a rhizome or stolon that is specialized for storing food

blade - ANS-the thin, flattened section of a plant leaf that collects sunlight

petiole - ANS-the stalk of a leaf; joins the leaf to a node of the stem

midrib - ANS-a major vein characteristic of eudicots that runs down the center of the
blade of a leaf

periderm - ANS-the protective coat consisting of the cork cambium and cork that
replaces the epidermis in woody plants during secondary growth

trichome - ANS-a small hair or other outgrowth from the epidermis of a plant; serves
protective functions and prevents transpiration

stele - ANS-the central core of the stem and root of a vascular plant, consisting of the
vascular tissue and associated supporting tissue

vascular cylinder - ANS-the central vascular core of a plant root

vascular bundle - ANS-a strand of conducting vessels in the stem or leaves of a plant,
typically with sclerenchyma fibers on the outside, phloem in the middle, and xylem on
the inside

pith - ANS-ground tissue internal to the vascular tissue

cortex - ANS-ground tissue external to the vascular tissue

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