Animals that lace a backbone
"to shed an old outer covering so that it can be replaced with a new one"
Molt
What benefits do earthworms give the plants in the soil that they inhabit
they mix the soil, recycle nutrients and bring up more minerals
Flowers with both stamen and carpels
Perfect Flowers
If you count the cephalothorax as one body segment, how many major segments does an arthropod with a cephalothorax have?
Two
What type of symmetry does this have?
Spherical
A body covering, typically made of chitin, that provides support and protection
Exoskeleton
Name at least 8 parts of the earthworm that we discussed last week
Ganglia
Pharynx
aortic arches
esophagus
dorsal blood vessel
intestine
seminal vesicle
ovary
oviduct
gizzard
ventral nerve cord
oviduct
seminal receptacles
Three parts of the female reproductive organ
Stigma, Style and Ovary
If an arthropod did not have any predators living in it's ecosystem, would it still need an exoskeleton?
Yes it needs it for the support of the body.
An organism with this symmetry can only be cut into two identical halves by a single longitudinal cut along the center-right and left halves. Human Body
Bilateral
Thorax, Abdomen, and Cephalothorax
Arthropods
Annelida
Stem is cut from one plant and attached to another.
Grafting
If an arthropod could not taste but the rest of the nervous system is operational, what sensory organ is malfunctioning?
antennae
Posessting both male and female reproductive organs. An Earthworm is this.
Hermaphroditic.
An eye made of many lenses, each with a very limited scope.
Compound Eye
If an earthworm's mouth is fully functional but it cannot ingest soil, what organ is malfunctioning
Pharynx
Growth of a plant toward sunlight.
Phototropism
A crayfish loses its claw in a fight. What happens?
It grows back
How are Fungi different from animals
Animals ingest their food while fungi absorb their food after external digestion
List at least 4 parts of the crayfish:
Antennae
Antennules
Cephalothorax
abdomen
telson
uropods
swimmerets
carapace
chelipeds
eye
walking legs
What process will stop if the earthworm's cuticle dries up
Repiration
The transfer of pollen grains from the anther to the carpel in flowering plants.
Pollination
Why do we say that arthropods are constantly bleeding internally?
They have an open circulatory system, and blood flows directly onto the tissue from the arteries