lab7 Flashcards
- Segmented worm phylum is _______
- Our model organism is ______
- it’s subphylum is ____
- It’s symmetry is ____
- Reproduction is _____
- It’s habitat is _______
- food/energy is obtained by
- sessile or motile
- Some adaptations are ________
- Some friends are _________
- Body plan is
- type of digestive system
- Annelida
- Lumbricus
- Eumetazoa
- bilateral
- Hermaphroditic
- moist terestrial environments (burrows)
- seperate mouth and anus
- motile bycontraction of muscles in its body wall
- Protective cuticle covering body
- Sandworm and leech
- triploblastic coelomate
- tubular
coelom
fluid filled body cavity surrounded entirely by a mesoderm ( a cavity in the mesoderm)
- contains the internal organs
pathway of food in lumbricus
pharynx takes in good from the mouth
Food passes through esophogus
Food is stored temporarily in thin walled crop
Passes to muscular gizzard (where it is ground up)
Long intestine (digestion and absorption of nutrients occurs)
eliminated through the anus
hearts of annelids pump blood to
ventral blood vessel, which takes it posteriorly to all segments
seminal vesicles
store the sperm
ventral nerve cord
gives rise to small nerves in each segment
- Apple snail phylum is _______
- Our model organism is ______
- it’s subphylum is ____
- It’s symmetry is ____
- Reproduction is _____
- It’s habitat is _______
- food/energy is obtained by
- sessile or motile
- Some adaptations are ________
- Some friends are _________
- Body plan is
- Digestive system
- Mollusca
- Pomacea
- Eumetazoa
- Bilaterral symmetry
- Seperate sexes
- Freshwater
- Omnivorous (feed on algae, terrestrail plants, detritus and decaying animals)
- motile by muscular contractions which pass down the length of the foot and it glides on film of mucus
- have both gills and lungs in case water dries up
- Clam, Octopus, Squid
- triploblastic coelomate
- Tubular
Molusk body commonly consists of
- the foot
- the visceral mass
- the mantle
Visceral mass contains ______
the internal organs
mantle
fold of tissue which secretes the shell
mollusk shells made of
calcium carbonate
Arthropods are animals with _______
They have an ______ which is called a ______
Are made of a tough carbohydrate called ______
jointed appendages
External skeleton, exoskeleton
Chitin
In order to grow arthropods must
periodically shed their exoskeleton and secrete a new one through molting
- Crayfish phylum is _______
- Our model organism is ______
- it’s subphylum is ____
- It’s symmetry is ____
- Reproduction is _____
- It’s habitat is _______
- food/energy is obtained by
- sessile or motile
- Some adaptations are ________
- Some friends are _________
- Body plan is
- Type of digestive system
- Arthropoda
- Cambarus
- Eumetazoa
- bilateral
- freshwater
- predaters and detrivores
- motile by jointed appendages
- Excapes from predation by quickly doing a tail flip(bending abdomen rapidly under the thorax which propels the crayfish backwards)
- Any insect
- triploblastic coelomate
- tubular gut
antennae on crayfish are ______
sensory appendages
Cheliped for
defense, subduing prey and sexual display
maxillae and maxillipeds are for
breaking up food particles and guiding them into the mouth
Mandibles are for
cutting and grinding food
Anterior walking legs of crayfish for
walking and searching for food (have pincers on them)
pleopods
create a current of water that passes over the gills aiding in respiration
gonopods
on male crayfish and are used to transfer sperm to female crayfish
female crayfish release eggs and stored sperm form
seminal receptacles
uropods and telson make up
the tail fin
