BIO 112 Exam Questions and Verified Answers/Accurate Solutions| Already Graded A+
Vertebrates, tunicates, and lancelets
a.are all members of the phylum Chordata.
b.all have a backbone in the adult stage.
c.are all marine fish.
d.are all terrestrial heterotrophs. are all members of the phylum Chordata.
The major difference between marsupials and placental mammals is
a.their ability to maintain a steady body temperature.
b.their teeth.
c.their pattern of embryonic development.
d.the size of their eggs. their pattern of embryonic development.
As an animal develops, the ectoderm becomes the
a.heart.
b.tissue that lines the body cavity.
c.skin and nervous system.
d.muscle tissue. skin and nervous system.
A group of similar cells organized into a functional unit is called
a.a nervous system.
b.a specialized cell.
c.a tissue.
,d.an organ. a tissue.
Sponges
a.are nonsymmetrical.
b.lack organization into tissues and organs.
c.possess cells that are capable of recognizing other sponge cells.
d.All of the above all of the above
In amphibians, gases are exchanged through the gills, lungs, and
a.heart.
b.air bladder.
c.lateral line system.
d.skin. skin
The offspring of marsupial mammals
a.hatch from eggs.
b.remain inside their mother until development is complete.
c.are born early and complete their development in their mother's pouch.
d.All of the above are born early
Roundworms have a fluid-filled cavity called a
a.coelom.
b.pseudocoelom.
,c.digestive system.
d.None of the above pseudocoelom.
Spiders, scorpions, and horseshoe crabs belong to the subphylum
a.Arthropoda.
b.Crustacea.
c.Chordata.
d.Chelicerata. Chelicerata.
Reptiles, except for alligators and crocodiles, have a heart that has
a.two atria and two ventricles.
b.two atria and one partially divided ventricle.
c.one atrium and two partially divided ventricles.
d.two atria and two partially divided ventricles. two and one
Adult sponges
a.have body walls with many pores.
b.possess true tissues.
c.are active swimmers.
d.use stinging cells to capture prey. have body walls with many pores.
Which of the following statements about the earliest mammals is true?
a.They first appeared after the extinction of the dinosaurs.
, b.They outcompeted dinosaurs for food and other resources, resulting in the dinosaurs'
extinction.
c.They were large and preyed on many small dinosaurs.
d.They coexisted with dinosaurs but did not compete with them for food and other resources.
they coexisted
Kangaroos and opossums are
a.marsupials.
b.monotremes.
c.macroscelidea.
d.placental mammals. marsupials
The operculum
a.is part of the skeletal system.
b.is an adaptation for rapid swimming.
c.covers the gill chamber.
d.None of the above covers the gill chamber
Mammals that lay eggs are
a.placental mammals.
b.pouched mammals.
c.monotremes.
d.semi-pouched mammals monotremes
The exoskeleton of arthropods is made of a material called
Vertebrates, tunicates, and lancelets
a.are all members of the phylum Chordata.
b.all have a backbone in the adult stage.
c.are all marine fish.
d.are all terrestrial heterotrophs. are all members of the phylum Chordata.
The major difference between marsupials and placental mammals is
a.their ability to maintain a steady body temperature.
b.their teeth.
c.their pattern of embryonic development.
d.the size of their eggs. their pattern of embryonic development.
As an animal develops, the ectoderm becomes the
a.heart.
b.tissue that lines the body cavity.
c.skin and nervous system.
d.muscle tissue. skin and nervous system.
A group of similar cells organized into a functional unit is called
a.a nervous system.
b.a specialized cell.
c.a tissue.
,d.an organ. a tissue.
Sponges
a.are nonsymmetrical.
b.lack organization into tissues and organs.
c.possess cells that are capable of recognizing other sponge cells.
d.All of the above all of the above
In amphibians, gases are exchanged through the gills, lungs, and
a.heart.
b.air bladder.
c.lateral line system.
d.skin. skin
The offspring of marsupial mammals
a.hatch from eggs.
b.remain inside their mother until development is complete.
c.are born early and complete their development in their mother's pouch.
d.All of the above are born early
Roundworms have a fluid-filled cavity called a
a.coelom.
b.pseudocoelom.
,c.digestive system.
d.None of the above pseudocoelom.
Spiders, scorpions, and horseshoe crabs belong to the subphylum
a.Arthropoda.
b.Crustacea.
c.Chordata.
d.Chelicerata. Chelicerata.
Reptiles, except for alligators and crocodiles, have a heart that has
a.two atria and two ventricles.
b.two atria and one partially divided ventricle.
c.one atrium and two partially divided ventricles.
d.two atria and two partially divided ventricles. two and one
Adult sponges
a.have body walls with many pores.
b.possess true tissues.
c.are active swimmers.
d.use stinging cells to capture prey. have body walls with many pores.
Which of the following statements about the earliest mammals is true?
a.They first appeared after the extinction of the dinosaurs.
, b.They outcompeted dinosaurs for food and other resources, resulting in the dinosaurs'
extinction.
c.They were large and preyed on many small dinosaurs.
d.They coexisted with dinosaurs but did not compete with them for food and other resources.
they coexisted
Kangaroos and opossums are
a.marsupials.
b.monotremes.
c.macroscelidea.
d.placental mammals. marsupials
The operculum
a.is part of the skeletal system.
b.is an adaptation for rapid swimming.
c.covers the gill chamber.
d.None of the above covers the gill chamber
Mammals that lay eggs are
a.placental mammals.
b.pouched mammals.
c.monotremes.
d.semi-pouched mammals monotremes
The exoskeleton of arthropods is made of a material called
