BIO 172 EXAM 2 UH MANOA CURTIS DAEHLER
A diploid stage is dominant - Answers - in the animal lifecycle
animals undergo unique development stages: - Answers - blastula, gastrulation
Hox gene - Answers - regulate animal development
You can manipulate hox genes and - Answers - make different parts of the animal
appear in different places.
many animals have a diploid larval stage that undergoes - Answers - metamorphosis
Which of the following be used to distinguish animals from plants? - Answers - Presence
of mitochondria
Presence of zygote
Presence of haploid life stage
None of the above <---
Based on the fossil record - Answers - The earliest animals were mainly predators
The earliest animals were terrestrial
The earliest animals were photosynthetic
All of the above
None of the above
Which series represents how fossil record was found - Answers - Sponge, dinosaur,
animal????
Bilateral animals are - Answers - triploblastic and can morphologically classified as
protosomes deuterostomes based on embryo development
Gastrulation is the formation of the - Answers - gut and only occurs in animals
Muscle and nerve cells are - Answers - unique to animals
To help distinguish the two: remember Protostomes means - Answers - first (develop
mouth first)
Deuterostomes means second - Answers - (develop mouth second)
What's the difference between Metazoa and Eumetazoa? - Answers - Eumetazoa
include only animals with true tissues
sponges are basal animals - Answers - as evidenced by similarities of choanocytes to
free living protists
,Major Skin protein in a sponge is - Answers - collagen.
Sponges are PHYLUM: - Answers - PORIFERA
All Porifera Lack - Answers - true tissues and organs. they have a mesophyl
Porifera Characteristics - Answers - Sexual Hermaphrodites
Budding
Gemmules - can wait until water comes back
Mesophyl
Lack True tissues and organs
All metazoans
2 main groups of Sponges - Answers - Calcareous Sponges, Siliceous Sponges.
CNIDARIA CHARACTERISTICS - Answers - Special about Cnidarians??? True
tissues?????
Cnidarians food comes out of its mouth after digesting
Polyp Stays on the ground
Medusa Floating form
Cnidarians - Answers - are diploblastic aquatic animals
characterized by cnidocytes that contain nematocysts
The two Cnidarian body types are structurally similar - Answers - Gastrodermis,
epidermis
Hydrozoans alternate between - Answers - polyp and medusa..
Class Scyphozoa is dominated by - Answers - the medusa life form. These are the true
Jellyfish. Swims underwater. Dominated by the medusa stage.
Class Cubozoa : Like Scyphozoa but - Answers - bell is square in cross section. Ring of
eye and statocysts.. Nerve net
Class Anthozoa - Answers - is characterized by only a polyp life form
Lophotrochozoa - Answers - bilaterian animals have bilateral symmetry and triploblastic
development.
Most have a lophorphore and/or
trochophore larva
Lophotrochozoa: phylum Platyhelminthes - Answers - flatworms are triploblastic
acoelomates,
lacking a circulatory system
, Turbellaria - Answers - mostly free-living flatworms
predators or scavengers
terrestrial or aquatic
epidermis is covered in cilia and mucus
Most Platyhelminthes are placed in the group Rhabditophora, - Answers - having glands
in their epidermis that produce rhabdites, probably for defense. Rhabdites - secrete a
slimy substance from their skin.
Class Monogenea - Answers - ectoparasitic flatworms with
a single hot
Class Trematoda - Answers - : endoparasites of vertebrates,
commonly known as flukes
Lophotrochozoa are - Answers - These animals are all protostomes -- the mouth
develops before the anus in the young embryo
Rotifers are - Answers - microscopic omnivores that live in freshwater
Rotifers - Answers - Food is drawn into the mouth by a ring of cilia (corona),
gut has separate mouth and anus
Ectoprocts (Bryozoans) - Answers - are tiny colonial animals
that live in aquatic environments. They have a lophophore
corals do not have - Answers - anus
Ectoprocts - Answers - use a ciliated lophophore for feeding
Ectoproct colonies - Answers - sometimes secrete a calcareous exoskeleton
Brachiopods - Answers - look like clams but they are not closely related
Microscopic cilia on the lophophore - Answers - generate
water inflow (2) and outflow (1)
Phylum Mollusca - Answers - Typically have a calcareous shell secreted by a mantle; a
radula is used for feeding
Brachiopods attach to substrates via a - Answers - pedicle and feed using a lophophore
Class Polyplacophora - Answers - Chitons have shells
composed of 8
overlapping plates
A diploid stage is dominant - Answers - in the animal lifecycle
animals undergo unique development stages: - Answers - blastula, gastrulation
Hox gene - Answers - regulate animal development
You can manipulate hox genes and - Answers - make different parts of the animal
appear in different places.
many animals have a diploid larval stage that undergoes - Answers - metamorphosis
Which of the following be used to distinguish animals from plants? - Answers - Presence
of mitochondria
Presence of zygote
Presence of haploid life stage
None of the above <---
Based on the fossil record - Answers - The earliest animals were mainly predators
The earliest animals were terrestrial
The earliest animals were photosynthetic
All of the above
None of the above
Which series represents how fossil record was found - Answers - Sponge, dinosaur,
animal????
Bilateral animals are - Answers - triploblastic and can morphologically classified as
protosomes deuterostomes based on embryo development
Gastrulation is the formation of the - Answers - gut and only occurs in animals
Muscle and nerve cells are - Answers - unique to animals
To help distinguish the two: remember Protostomes means - Answers - first (develop
mouth first)
Deuterostomes means second - Answers - (develop mouth second)
What's the difference between Metazoa and Eumetazoa? - Answers - Eumetazoa
include only animals with true tissues
sponges are basal animals - Answers - as evidenced by similarities of choanocytes to
free living protists
,Major Skin protein in a sponge is - Answers - collagen.
Sponges are PHYLUM: - Answers - PORIFERA
All Porifera Lack - Answers - true tissues and organs. they have a mesophyl
Porifera Characteristics - Answers - Sexual Hermaphrodites
Budding
Gemmules - can wait until water comes back
Mesophyl
Lack True tissues and organs
All metazoans
2 main groups of Sponges - Answers - Calcareous Sponges, Siliceous Sponges.
CNIDARIA CHARACTERISTICS - Answers - Special about Cnidarians??? True
tissues?????
Cnidarians food comes out of its mouth after digesting
Polyp Stays on the ground
Medusa Floating form
Cnidarians - Answers - are diploblastic aquatic animals
characterized by cnidocytes that contain nematocysts
The two Cnidarian body types are structurally similar - Answers - Gastrodermis,
epidermis
Hydrozoans alternate between - Answers - polyp and medusa..
Class Scyphozoa is dominated by - Answers - the medusa life form. These are the true
Jellyfish. Swims underwater. Dominated by the medusa stage.
Class Cubozoa : Like Scyphozoa but - Answers - bell is square in cross section. Ring of
eye and statocysts.. Nerve net
Class Anthozoa - Answers - is characterized by only a polyp life form
Lophotrochozoa - Answers - bilaterian animals have bilateral symmetry and triploblastic
development.
Most have a lophorphore and/or
trochophore larva
Lophotrochozoa: phylum Platyhelminthes - Answers - flatworms are triploblastic
acoelomates,
lacking a circulatory system
, Turbellaria - Answers - mostly free-living flatworms
predators or scavengers
terrestrial or aquatic
epidermis is covered in cilia and mucus
Most Platyhelminthes are placed in the group Rhabditophora, - Answers - having glands
in their epidermis that produce rhabdites, probably for defense. Rhabdites - secrete a
slimy substance from their skin.
Class Monogenea - Answers - ectoparasitic flatworms with
a single hot
Class Trematoda - Answers - : endoparasites of vertebrates,
commonly known as flukes
Lophotrochozoa are - Answers - These animals are all protostomes -- the mouth
develops before the anus in the young embryo
Rotifers are - Answers - microscopic omnivores that live in freshwater
Rotifers - Answers - Food is drawn into the mouth by a ring of cilia (corona),
gut has separate mouth and anus
Ectoprocts (Bryozoans) - Answers - are tiny colonial animals
that live in aquatic environments. They have a lophophore
corals do not have - Answers - anus
Ectoprocts - Answers - use a ciliated lophophore for feeding
Ectoproct colonies - Answers - sometimes secrete a calcareous exoskeleton
Brachiopods - Answers - look like clams but they are not closely related
Microscopic cilia on the lophophore - Answers - generate
water inflow (2) and outflow (1)
Phylum Mollusca - Answers - Typically have a calcareous shell secreted by a mantle; a
radula is used for feeding
Brachiopods attach to substrates via a - Answers - pedicle and feed using a lophophore
Class Polyplacophora - Answers - Chitons have shells
composed of 8
overlapping plates
