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BIO 123 REVIEW EXAM WITH COMPLETE SOLUTIONS 100% CORRECT
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BIO 123 REVIEW EXAM WITH COMPLETE SOLUTIONS100% CORRECT
Nonvascular plant - ANSWER no special conducting tissues that are gonna give off
materials.
Shoot system - ANSWER stem, leaves and flower petals
consists of stem and leaves
usually above the ground surface
acquires sunlight and CO2
Root system - ANSWER soil and roots (cells)
usually below the ground surface
absorbs water and minerals
anchors a plant in the soil
stores food-carbohydrates
Root hairs - ANS absorption of water and minerals usually take place through the root
hairs developed around the root tips.
finger-like extension of epidermal cells, increase the absorptive surface or the root
Leaves - ANS the leaf is the principle photosynthetic organ
compose of blade and petiole (attaches the leaf to the stem)
Simple leaf - ANS single, undivided blade
,Compound leaf - ANS the blade composed of several leaflets
Monocot ANSWER 1 cotyledon Flowers parts that come in multiples of 3 a core of
parenchyma cells surrounded by alternating rings of xylem and phloem in the stem the
vascular bundles are scattered throughout the ground tissue Eudicot ANSWER 2
cotyledons flower parts come in whorls of 4 or 5 xylem has star like appearance in c.s.
with phloem between "arms"
vascular tissue in stem in the form of vascular bundles in a ring
Dermal tissue - ANSWER single outer protecting layer
in herbaceous plants it is one cell layer thick called epidermis with a cuticle
a protective tissue called periderm replaces the epidermis in mature woody stem and
root
Vascular tissue - ANSWER transports materials throughout the plant and supports the
plant mechanically
includes xylem and phloem
Xylem - ANSWER transports water and dissolved minerals upward from roots into the
shoots
die at maturity
(Xylem) Water conducting cells - ANSWER tracheids and vessel elements
Phloem - ANSWER transports sugar both upward and downward
, transports sugar produced where they are made (mainly leaves) to actively growing
parts of the plant or growing structures
along with each is a non-conducting cell called a companion cell
alive at maturity
(Phloem) Sugar conducting cells - ANSWER sleeve tube elements
Ground tissue - ANSWER any tissue in the plant that's not dermal or vascular
function in storage, photosynthesis, support and short distance transport
Pith - ANSWER internal to the vascular tissue
Cortex- ANSWER external to vascular tissue
Meristems- ANSWER continuous growth in plants is possible because of this,
undifferentiated tissues composed of dividing cells
Types of meristems- ANSWER apical and lateral
Apical meristem- ANSWER primary growth
at the tips of shoots and roots
Lateral meristem- ANSWER secondary growth, which allows the stems and roots of
woody plants to grow in circumference
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