Bio 1402 Final Exam ttu Held
Questions And Answers
Porifera (sponges) -
correct answer ✅-made of incurrent pores
-sessile filter feeders
-STATIONARY
-made of concurrent pores
(H2O editors the mouth)
-Made of two cells
•choanocytes (COLLAR CELLS): STATIONARY cells that pump h2o out
of the mouth
•amoebocytes: crawling cells (not stationary) that deliver food to
the rest of the sponge
Cnidqaria (jelly fish, hydras, corals, sea anemones) -
correct answer ✅-can regenerate lost parts *
-come in 2 shapes
•vases (POLYS)
•umbrellas (MEDUSAE)
-can regenerate lost parts
-armed w/ stinging cells
•called CHIDOCYTES
,Bio 1402 Final Exam ttu Held
Questions And Answers
••inside each is a HARPOON called a NEMATOCYSTS that is
triggered by scent of touch
Platyhelminthes (flatworms, tapeworm) -
correct answer ✅-simple head that senses light chemicals and
pressure
-flat so no need for circulatory system. Uses diffusion instead
-1 ended gut (MOUTH =NAVEL)
-many are hermaphrodites
Nematodes (roundworms) -
correct answer ✅-many are parasites
Ex: trichinosis
Molluscs (Snails, Slugs, Oysters, Clams, Octopuses, Squids) -
correct answer ✅-true organs
-radula :rasping tongue
-gills
-open circulatory system
•all organs are bathed in blood
, Bio 1402 Final Exam ttu Held
Questions And Answers
-mantle: layer of tissue that secretes a calcium carbonate shell
-hunters
-eyes in octopuses /squids
—foot and tentacles for gripping
Annelids (earthworms, leeches) -
correct answer ✅-use a specialized gut made of crop and gizzard
-segmented bodies
-specializes gut: makes of 2 things
•CROP: stores food
•GIZZARD: grinders food
-closed circulatory system
-uses circular and longitudinal muscles for movement
Anthropods (centipedes, CRABS, cockroaches, lobsters, insects,
spiders) -
correct answer ✅-known for exoskeleton, used for
armor/protection*
-largest group of animals on earth abt 3/4 of all animals
-2 groups
Questions And Answers
Porifera (sponges) -
correct answer ✅-made of incurrent pores
-sessile filter feeders
-STATIONARY
-made of concurrent pores
(H2O editors the mouth)
-Made of two cells
•choanocytes (COLLAR CELLS): STATIONARY cells that pump h2o out
of the mouth
•amoebocytes: crawling cells (not stationary) that deliver food to
the rest of the sponge
Cnidqaria (jelly fish, hydras, corals, sea anemones) -
correct answer ✅-can regenerate lost parts *
-come in 2 shapes
•vases (POLYS)
•umbrellas (MEDUSAE)
-can regenerate lost parts
-armed w/ stinging cells
•called CHIDOCYTES
,Bio 1402 Final Exam ttu Held
Questions And Answers
••inside each is a HARPOON called a NEMATOCYSTS that is
triggered by scent of touch
Platyhelminthes (flatworms, tapeworm) -
correct answer ✅-simple head that senses light chemicals and
pressure
-flat so no need for circulatory system. Uses diffusion instead
-1 ended gut (MOUTH =NAVEL)
-many are hermaphrodites
Nematodes (roundworms) -
correct answer ✅-many are parasites
Ex: trichinosis
Molluscs (Snails, Slugs, Oysters, Clams, Octopuses, Squids) -
correct answer ✅-true organs
-radula :rasping tongue
-gills
-open circulatory system
•all organs are bathed in blood
, Bio 1402 Final Exam ttu Held
Questions And Answers
-mantle: layer of tissue that secretes a calcium carbonate shell
-hunters
-eyes in octopuses /squids
—foot and tentacles for gripping
Annelids (earthworms, leeches) -
correct answer ✅-use a specialized gut made of crop and gizzard
-segmented bodies
-specializes gut: makes of 2 things
•CROP: stores food
•GIZZARD: grinders food
-closed circulatory system
-uses circular and longitudinal muscles for movement
Anthropods (centipedes, CRABS, cockroaches, lobsters, insects,
spiders) -
correct answer ✅-known for exoskeleton, used for
armor/protection*
-largest group of animals on earth abt 3/4 of all animals
-2 groups
