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Everyday Botany & Plant Physiology FALL 2013
Transcript of Everyday Botany & Plant Physiology FALL 2013
Labwork: Assign nutrient deficiencies of each numbered hydroponic plant by using Table 9.9 on pg. 144 (different from directions in book!)
Monocots vs. Dicots
Flowers & Fruits
We Eat Roots!
Everyday Botany & Plant Physiology
the study of plants
study of the
mechanisms of living things
What makes plants green?
From where do plants get their energy?
Simple vs Compound
use of mineral nutrient solutions instead of soil
easier to control
Petals in multiples of four or five
Leaves palmate or pinnate venation
Stem vascular bundles are organized
Roots are taproots
Petals in multiples of three
Leaves have parallel venation
Stem vascular bundles are random
Roots are fibrous
see page 127
sedimentation of amyloplasts allows plant to sense gravity
: movement in response to external stimulus
Sensing of gravity sends roots down
Benefit: Roots go toward water!
Sensing of gravity
sends stems up
Benefit: Stems will go toward light source
directed growth in
response to light
measure angle change of stem in response in light over time with a protractor
The world is...
eg. pine trees
"seed leaves" produced by the embryo
serves as food to embryo during seed dormancy
may become the first leaf/leaves upon germination
page 137: dissect a peanut
Further Categorizing Angiosperms
mono = one cotyledons
di = two cotyledons
Find 3 examples of each from
plants on display
xylem: water transport
phloem: nutrient transport
including one of our biologically important molecules... sugar!
new stems and leaves
page 132: celery activity
Monocot vs Dicot
cluster of xylem and phloem cells
transport water (xylem) and nutrients (phloem)
page 132 activity
stem vascular bundles
We Eat Modified Stems!
(page 126 & 131)
ripened ovary containing seeds
fleshy and juicy
fertilized and ripened ovules of a plant
contain nutrients for embyro
(page 137: list 3 types)
(page 130, but use directions on table)
pores for gas exchange
two guard cells control
if open or closed
stomata under the microscope
Purpose of flowers?
To look pretty for humans?
(page 134: dissect a flower)
Monocots vs Dicots
petals in patterns of 3
petals in patterns of 4 or 5
pollinators unknowningly carry pollen to other plants
pollinators are after a sugary food source (nectar)
many types of pollinators, including bees, butterflies, bats and hummingbirds
pollen grains: male gametes
contains ovules: eggs (female gametes)
(after fertilization, develops into a seed)
Plants are beneficial
Stop and smell the roses.
Eat your broccoli!
Catnip is for humans too!
What makes all these plants different?
Procedure 9.6 (page 142): etiolated plants are in the incubator, other plants on windowsill
(skip Procedure 9.4 and 9.5)
when seedlings are grown in insufficient light the symptoms are characterized by...
(do procedure to find out!)
leaf spikes that serve to minimize
water loss through stomata
other succulents, such as
moonstone have thick
epidermis to prevent
water loss through stomata
venus fly traps use
their leaves to capture
Dissect A Peanut!
Within the hard shell
of the peanut fruit,
are peanut seeds
Find all parts
You will be asked to
name each part
on lab practical!
Recognizing Poison Ivy
"leaves of three, let it be"
also, red stem near leaves
annual: survive one growing season
perennial: survive multiple
deciduous: lose leaves
Other terms to know
attachment to animal fur
Lab 5, Lab 6, Lab 9 (today's lab)
Study from lab book, old homework, quizzes, Powerpoints and Prezis
especially table from HW 5
Lab Practical 2 Next Week!