Metamorphosis
Changing Form As You Grow
Monarch butterfly complete metamorphosis: zygote (“egg”)
http://www.monarchwatch.org/update/2003/egg_glue1.jpg
Danaus plexippus
©1996 Norton Presentation Maker, W. W. Norton & Company
Monarch butterfly complete metamorphosis: larva
Danaus plexippus
The Milkweed Plant is
the host for the larva of
the monarch butterfly.
The plant produces a
poison to keep animals
from feeding on its
leaves.
But the monarch
caterpillar can feed on
this plant, and it uses
the poison from the
plant to protect itself
from birds who like to
eat caterpillars.
Asclepias - milkweed
©1996 Norton Presentation Maker, W. W. Norton & Company
Monarch butterfly complete metamorphosis: larva
Danaus plexippus
©1996 Norton Presentation Maker, W. W. Norton & Company
Monarch butterfly complete metamorphosis: larva
Danaus plexippus
©1996 Norton Presentation Maker, W. W. Norton & Company
Monarch butterfly complete metamorphosis: pupa
Danaus plexippus
©1996 Norton Presentation Maker, W. W. Norton & Company
Monarch butterfly complete metamorphosis: adult
Danaus plexippus
©1996 Norton Presentation Maker, W. W. Norton & Company
Monarch butterfly complete metamorphosis: adult
Danaus plexippus
Asclepias - Milkweed and Monarchs
Animals Eating Plants
Laval Caterpillar
Adult Butterfly
Plants Eating Animals
“Carnivorous Plants”
Drosera filiformis is a species of
sundew found in acid bogs along
the southeastern costal areas.
This one lives in NJ.
The acid water does not allow this
plant to remove minerals from the
boggy soil, so this and many
similar plants have evolved a
carnivorous lifestyle.
The leaves attract, attach, and
digest animals alive to mine their
bodies of minerals. The leaves do
not retrieve carbon or energy from
the animal, just mineral elements
normally obtained by plants from
soil.`
Drosera rotundifolia is the more-common sundew in CT
Remember that
carnivorous plants are
not eating insects for
energy or carbon…
they are mining
the insect bodies
for minerals
unavailable from
the acidic bog soil.
©1996 Norton Presentation Maker, W. W. Norton & Company
Drosera (sundew) uses sticky pads that look like nectaries
but are actually glandular hairs secreting botanical “super
glue” with digestive enzymes:
Sarracennia purpurea digests animals in rainwater held in pitcher-like
leaves
©1996 Norton Presentation Maker, W. W. Norton & Company
Saracennia (pitcher plant) leaves hold water to drown
insects and mine their bodies for minerals
Soil pH is less than 4
Dionaea muscipula
is a Carolina
species
It is rare and
endangered today!
©1996 Norton Presentation Maker, W. W. Norton & Company
Soil pH is less than 4
Dionaea (Venus’ fly trap) leaves have evolved three trip
hairs on each half-blade, an electrical potential is
produced, osmosis causes the trap to snap shut, This fly
is about to touch the second trip hair…
©1996 Norton Presentation Maker, W. W. Norton & Company
The trap halves have folded together, and the marginal
spines have turned inward…the compound action makes
an effective trap…have you ever tried to catch a fly?
Bladderwort is very
common in CT lakes!
http://www.fs.fed.us/wildflowers/plant-of-the-week/images/commonbladderwort/utricularia_macrorhiza_bladders_lg.jpg
http://tncweeds.ucdavis.edu/photos/utricinfla06.jpg
http://www.paflora.org/Utricularia%20inflata2.jpg
Utricularia is an aquatic carnivorous plant, each bladder
having a trap door to suck in swimming animals
Do Humans Eat Plants?
Do Plants Eat Humans?
Do Humans have
Metamorphosis?