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Botany Exam 2
Everything in Dr. K's class from lectures and Ch. 5-7, 12,17-18, 20, and 21
168
Biology
Undergraduate 2
03/03/2014

Additional Biology Flashcards

 


 

Cards

Term
What are the functions of roots? 
Definition

To anchor the plant

To absorb nutrients and water

To store starches the plant produces

Term
Dicot root
Definition
Radicle and Taproot
Term
Monocot Root
Definition
Fibrous root and Adventitious root
Term
Root Cap
Definition
Thimble shapped mass of parenchyma cells covering the tip of each root to protect the root as it pushes through the soil
Term
Region of cell division
Definition

Composed of an apical meristem and produces the root cap. 

 

Term
Apical Meristem: Protoderm
Definition
Produces the epidermis
Term
Apical Meristem: Ground Meristem
Definition
Produces parenchyma cells of the cortex
Term
Apical Meristem: Procambium
Definition
Produces primary xylem and phloem
Term
Region of Elongation
Definition
root cells lengthen several times their original size. Vacolues within the cels grow to occupy over 90% of the cells.
Term
[image]
Definition
Example of various terms
Term
Region of Maturation
Definition
Also called region of differentiation or root hair zone. Root hair, as part of the root's epidermis, appear and help the plant absorb, store, and support the plant
Term
Cortex
Definition
ring of parachyma cells between the epidermis and the endodermis and store food
Term
Endodermis
Definition
consists of a single layer cylinder of compactly arranged cells that are laced with lignin and suberin
Term
Casparian Strips
Definition
bands of lignin and suberin to waterproof the root's stele
Term
Stele
Definition
where the xylem and phloem can be found in the root
Term
Pericycle
Definition

where lateral roots start

 

lined the inside of the endodermis

Term
Cross in the stele of the root
Definition
It's a Dicot root
Term
A ring of xylem around the inside of the stele
Definition
Monocot root
Term
Cork Cambium
Definition
In Woody plants, this develops to produce cork (Periderm).  Is laced with lignin and suberin to help waterproof
Term
Cork Cambium
Definition

is a secondary growth in woody plants.

 

Monocots have no secondary growth, so no cork cambium

Term
Determinate Growth
Definition
growth the will STOP after a flower is produced or the plant reaches a certain size
Term
Indeterminate growth
Definition
occurs in trees and other perinnials where new tissue is added indefinitely
Term
Specialized roots
Definition
Food and water storage, propagative, pneumatophores, aerial, contractile, buttress, parasitic
Term
Food Storage Roots
Definition

extra cambial ccells develop in parts of the xylem of branch roots and produce large numbers of parachyma cells

 

ie sweet potatos, yams, water hemlock, dandelion, salsify

Term
Water Storage Roots
Definition

characterisic of plants that grow in aird climates or have inadequate soil to grow in

 

ie some members of the pumpkin family, manroots

Term
Adventitious roots
Definition

vine out and produce flowers and buds. Can spread and be a garden nuisance 

 

ie cherry, apple, pear and other fruit trees. Horseradish, rice paper plants, tree-of-heaven

Term
Pneumatophores
Definition

water plants develop these spongy roots for gas regulation , resulting in leggy roots that stick out above the water.

 

ie black mangrove, yellow water weed

 

swamp plants

Term
Aerial Roots
Definition

various uses include support and food production.

 

ie prop roots in corn, photosyntheic roots in vanilla orchid

Term
Contractile Roots
Definition
pull plant deeper into the soil for support
Term
Buttress Roots
Definition
Support roots in areas that can't support underground roots
Term
Parasitic Roots
Definition

use their roots to obtain food and water material. 

 

ie dodder, broomrape, pinedrop

Term
Mycorrhizae
Definition

a mutual relationship between fungi and plant roots.

 

helps increase root surface area to absorb nutrients 

Term
Root Nodules
Definition

contain nitrogen that helps balance the soil out

 

ie soybean

Term
Roots and Humans
Definition
Source of Food, Spices, Dyes, Drugs, and Insecticide
Term
External Form of a Woody Twig
Definition
Node, Internode, Leaf, and Petiole
Term
Node
Definition
Area where the leaf is attached to the twig
Term
Internode
Definition
A stem region betwen nodes
Term
Leaf
Definition
has a flattened blade
Term
Petiole
Definition
The stalk the leaf blade is attached to
Term
Axil
Definition
the angle between a petiol and the stem
Term
Terminal Bud
Definition
makes the twig grow longer during the growing season
Term
Stipules
Definition
appendages at the stem base of a leaf.
Term
Deciduous
Definition
Trees and shurbs who experience seasons and have dormant stiplues after the leaves fall out
Term
Bundle Scars
Definition
mark the location of the food and water conducting tissue, leaves scars on the leaves and can identify plants during their dormant stage.
Term
Apical Meristem: Stem
Definition
tissue in which cells actively divide and provide growth for the stem
Term
Leaf Primordia: Stems
Definition
tiny embryonic leaves that will develop into mature leaves after the bud scales fall off
Term
Axillary Buds: Stems
Definition
buds that have the ability to become branches or flowering buds for the next season
Term
Leaf Traces
Definition
trace amounts of xylem and phloem tissue that branches off to the new stem
Term
How do stems develop?
Definition
Narrow bands of cells between the primary xylem and primary phloem becomes the vascular cambium
Term
Cork Cambium
Definition
also called phellogenand produces cork cells that become laced with suberin to waterproof that plant
Term
Phellogen
Definition
cork cambium
Term
Phellogen
Definition
Term
Phellem
Definition
parachyma like cells in the cork cambium
Term
Tissue Patterns in Stems
Definition
Stele: Protostele, Siphonosteles, and Eusteles
Term
Protostele
Definition
consists of a solid core of conducting tissues in which the phloem usually surrounds the xylem. Common in now extinct primitive seeds and whisk ferns, club mosses, and other relative ferns.
Term
Siphonostele
Definition
tubulur with pith in the middle, common in ferns
Term
Eustele
Definition
discreet vascular bundles of xylem and phloem, common in present day flowering plants and conifers
Term
Tissue Patterns in Stems
Definition
Cotyledon, Dicotyledons (Dicot), and Monocotyledons (Monocot)
Term
Cotyledon
Definition

flowering plants that develop from seeds that have either one or two "seed leaves" attached to their embryonic stems.

 

seeds of pines can have up to 8 of these

Term
Dicotyledons
Definition

abbr Dicots 

have two cotyledons

Term
Monocotyledons
Definition

appr monocots

developed from a single cotyledon

Term
Tissue Patterns in Stems
Definition
Woody dicotyledonous stems include tyloses, heartwood, sapwood, hardwood, softwood, and resin canals
Term
Tyloses
Definition
are outgrowths on parenchyma cells of xylem vessels (vascular tissue used for water and mineral transport throughout a plant). When the plant is stressed by drought or infection, tyloses will fall from the sides of the cells and "dam" up the vascular tissue to prevent further damage to the plant.
Term
Heartwood
Definition
nonliving usually darker colored wood whose ells have ceased water functioning
Term
Sapwood
Definition

still have water conduction capabilities 

 

lighter in color

Term
Softwood
Definition
pines and cone bearing trees produce this wood because their xylem is primarily tracheids, instead of fibers or vessel elements
Term
Hardwood
Definition
Woody dicot trees produce this because thier xylem tissue is composed of more fibers or vessel elements than tracheids
Term
Resin canals
Definition
create resin in plants
Term
Monocot stems have neither a vascular cambium or a cork cambium
Definition
TRUE
Term
Palm Trees and Bamboo
Definition
Monocot "wood"
Term
What percentage of a living tree's weight is from its water content?
Definition
50%
Term
List some wood products
Definition
Lumber, Veneer, Pulp, and Fuel
Term
Specialized stems include the following:
Definition
rhizomes, tubers, bulbs, corms, runners, stolons, and cladophylls
Term
rhizomes
Definition

horizontal stems that grow below the ground often near the surface of the soil

 

stores food

Term
bulbs
Definition
large buds that are surrounded by fleshy bulbs with a small stem at the lower end
Term
corms
Definition
like bulbs but more stem than leaves, which are papery
Term
runners
Definition
hortizontal stems that grow aboveground and have long internodes
Term
stolons
Definition
produced beneath the soil and tend to grow in different directions, not horizontally
Term
cladophylls
Definition
a node bearing small scalelike leaves with axillary buds in the center of each of these.
Term
Leaves don't originate as primordia in buds.
Definition
FALSE
Term
The majority of leaves have the following at maturity:
Definition
Petiole, lamina, veins, stipules
Term
lamina
Definition
flattened blade that has a network of vascular bundle veins
Term
veins
Definition
vascular bundles in the leaf
Term
stipules
Definition
leaf like thorny appendages
Term
What is a simple leaf?
Definition
has a single blade
Term
What is a compound leaf?
Definition
mulitple leaves called leaflets
Term
Pinnately compund leaves look like what?
Definition
leaflets in pairs
Term
Bipinnately leaves
Definition
pinnate leaves that have pinnate leaflets
Term
Palmately compund leaves look like what?
Definition
a palm, are attached at the same point on the end of the petiole.
Term
What is the function of a leaf?
Definition
Green leaves capture light energy by photosynthesis
Term
Stomata and Guard Cells
Definition

help regulate waste management of the tree 

 

guard cells regulate when the stomata works

Term
Other functions of leaves include what?
Definition
Waste management and Movement of water
Term
Transpiration
Definition
water that evaporates into the atmosphere via the leaves
Term
Guttation via hydathodes
Definition
water pushed out of the hydathodes caused by root pressure at night when transpiration is not avilable
Term
Leaves are attached to stems at nodes, with stem regions between known as internodes
Definition
TRUE
Term
Phyllotaxy
Definition
arrangement of leaves including alternate, opposite, and whorled
Term
Alternate leaf arrangement
Definition
in a spiral along a stem
Term
Opposite leaf arrangement
Definition
two leaves attached at each node along the stem
Term
Whorled leaf arrangment
Definition
3+ leaves at each node along a stem
Term
What is leaf venation?
Definition
how the vascular bundle veins are arranged in a leaf
Term
Pinnately veined leaves?
Definition
dicot
Term
Midvein?
Definition
primary vein in a leaf
Term
Secondary veins
Definition
pinnatey veined, dicot
Term
Palmately veined leaves
Definition
like a palm
Term
Monocot leaf
Definition
parrellel veined
Term
dicot leaf
Definition
not parrelleell
Term
Dichotomous venation
Definition
veins are forked
Term
what are the three regions of the internal structure of a leaf?
Definition
Epidermis, mesophyll, and veins (vascular bundles)
Term
Leaf epidermis
Definition
single layer of cells covering the entire surface of the leaf
Term
Lower epidermis typicalled has thinner layer of cutin and is performated by numerous stomata.
Definition
TRUE
Term
Stomata are bordered by two guard cells that regulate when the stomata is open or closed.
Definition
TRUE
Term
Stomata guard cells are not filled with chlorophyll
Definition
FALSE
Term
Most photosynthesis takes place in the mesophyll between the two epidermis layers
Definition
TRUE
Term
Palisade Mesophyll
Definition
contains more than 80 percent of chloroplasts
Term
Spongy mesophyll
Definition
filled with air pockets and some chloroplasts
Term
Veins are scattered throughout the leaf mesophyll
Definition
TRUE
Term
Monocot leaves are different because
Definition
bulliform cells on either side of main central vein and the mesophyll is uniform
Term
Sun leaves vs shade leaves
Definition
Sun leaves have more palisade mesophyll and can process more light energy for photosynthesis
Term
Specialized leaves include the following
Definition
Arid, aquatic, tendrils, spines,thorns, prickles, storage (succulent and fleshy),flower pot, window,reproductive, bracts (floral leaves), Insect trapping (pitcher plants, sundews, venus flytraps, bladderwort)
Term
Arid leaf
Definition
developed in arid regions and have sucnken stomata, or stems may have taken over for photosynetheis entirely. Usually arid plants have leathery epidermis or fuzzy coverings
Term
aquatic leaf
Definition
does not have different mesophyll, and less xylem than phloem.
Term
tendrils
Definition
help the plant climb and to support the plant entirely as it climbs
Term
spines
Definition
modified desert leaves
Term
thorns
Definition
modifed stems
Term
prickles
Definition

growths on the plant epidermis

 

 (rose thorn)

Term
storage (succulent and fleshy)
Definition
leaves that are modified for water retention
Term
flower pot
Definition
home fo the ant colonies. mutual relationship that stimules ants and plant
Term
window
Definition
plant is buried in the ground and window is area that sunlight can get through to the chloroplasts hidden in the armor shell of the plant
Term
reproductive
Definition
can produce new plants at the leaves
Term
bracts (floral leaves)
Definition
poinsettas
Term
Insect trapping (pitcher plants, sundews, venus flytraps, bladderwort)
Definition
obvious
Term
Chloroplasts of mature leaves contain what
Definition
water soluble anthocyanins and betacyanins
Term
Deciduous plants drop their leaves seasonally
Definition
TRUE
Term
Abscission, abscission zone
Definition
process by which leaves are shed
Term
Human and ecological relevance of leaves
Definition
landscaping, food, dyes, perfumes, ropes and twine, drugs, beverages, insecticides, waxes, aesthetics
Term
What is sexual reproduction?
Definition
male + female= zygote
Term
What is asexual reproduction?
Definition
plant reproduces from itself, no partner DNA needed
Term
Asexual vs sexual
Definition

one needs two, the other needs one

 

unique combo vs clone

Term
Sexual reproduction: Meiosis
Definition

pro, ana, meta, tele I

II

Term
Cells have two sets of chromosomes, one set from each parent
Definition
TRUE
Term
Members of each PAIR of chromosomes are identical in four ways
Definition
TRUE
Term
What are homologous chromosomes?
Definition
same : homo
Term
What are the results of meiosis?
Definition
Four cells in two successful divisions ((spores))
Term
Spores
Definition

Animals: Meiosis produces gametes directly

Plants: meiosis produces spores, to make gametes

Term
DNA molecules right before meiosis
Definition
they double
Term
Break down meiosis
Definition

Division I: Meiosis I or Reproductive Division

Division II: Meiosis II or Equational Division

Term
The points at which DNA crosses during Prophase I
Definition
Chiasmata
Term
Meiosis, steps of
Definition

Pro, Meta, Ana, Tele I

Pro, Meta, Ana, Tele II

Term
Ploidy Levels
Definition

Haploid (1)

Diploid (2)

Triploid (3)

Tetraploid (4)

 

Polyploid 

Term
Alteration of Generations in Plants
Definition
Haploid (n): Meiosis-spore-gametophyte=gamete=Diploid (2):fertilization-zygote-sporophyte-sporocyte-Meiosis
Term
Mitosis vs Meiosis
Definition

Mitosis: 2n-2n=2n

Meisois: 2n-2n=1n==1n

Term
Haploid vs Diploid
Definition
n vs 2n
Term
Mitosis and meiosis create new daughter cells
Definition
TRUE
Term
Both meiosis and mitosis are required in an organism's lifestyle
Definition
TRUE
Term
Plants and their relatives have three unique life cycles
Definition
TRUE
Term
An Example of a haplobiotic haploid
Definition
Chlamydomonas, a unicelluar alga
Term
Bud scales
Definition
protects the stem bud as it begins to grow
Term
embryophytes
Definition
Term
Viridiplantae
Definition
all green plants
Term
Chlorophyta and Streptophyta
Definition

two branches in land plant evolution

 

Term
Charophyte
Definition
in the streptophyte family
Term
CZC lineage
Definition
Charales, Zygnmatale, and Coleochaetale
Term
Alterations of Generations
Definition
a reproductive cycle in which a haploid (n) phase, the gametophyte, produces gametes, which after fusion in the pair form a zygote, germinates and produces a diploid state (2n), the sporophyte. Spores produces by the meiotic division from the sporophyte give rise to the next round of gametophytes, nabling the cycle to start over.
Term
gametophyte
Definition
 is a haploid multicellular adult stage in the alternation of generations during the life cycle of land plants and algae. It produces haploidgametes. It is produced from mitotic cell division of spores, which are produced by meiosis in sporophytes.
Term
Sporophyte
Definition
 is the diploid multicellular stage in the life cycle of a plant or alga. It develops from the zygote produced when ahaploid egg cell is fertilized by a haploid sperm and each cell therefore has a double set of chromosomes, one set from each parent.
Term
Spore
Definition

is a unit of asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavorable conditions.


(n)

Term
three main lineages of embrophytes
Definition

bryophyte

tracheophyte (lycophyte and euphyllophyte)

spermatophyte (gymnosperm and angiosperm)

Term
Bryophyte
Definition
mosses, hornworts, and liverworts
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