Exam 3 BSC2011 Questions and All
Correct Answers 2026-2027 Updated.
In bilaterally symmetric animals, neural elements typically concentrate in the head, which is at
the _____________ end of the animal. - Answer Anterior
You find a homeothermic vertebrate that lays eggs. It could belong to one of which pair of
groups? - Answer birds or monotremes
Which trait is commonly found in both of these two groups: Chondrichthyans (Cartilaginous
fishes) and Osteichthyans (Bony fishes). - Answer Hinged jaws
You are walking along the beach and find an organism that lacks symmetry, into which group
does it belong? - Answer Porifera
Vertebrates and tunicates both have... - Answer A notochord
Crustaceans, insects and chelicerates and nematodes all share the following trait: - Answer A
cuticle
Which of the following is not a reptile? - Answer northern leopard frog
What is believed to be the most significant result of the evolution of the amniotic egg? - Answer
Tetrapods are no longer tied to the water for reproduction.
In both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic
partner? - Answer Inorganic nutrients
This animal has a pseudocoelom, a cuticle and longitudinal muscles but not circular muscles.
Based on that information, you would conclude that it is... - Answer a nematode
A pseudocoelom... - Answer Can help in movement as it functions as a hydrostatic skeleton
Suppose a researcher for a pest-control company developed a chemical that inhibited the
development of an embryonic mosquito's endodermal cells. Which of the following would be a
likely mechanism by which this pesticide works? - Answer The mosquito would have trouble
digesting food, due to impaired gut function.
, Which of the following are derived characteristics of mammals? - Answer hair, endothermy,
milk
An aquatic predatory animal is a fast swimmer and chases prey through the ocean. Which of the
following body plans would be most advantageous? - Answer Bilateral
Fungi, along with ____________, are in the group ______________. - Answer animals,
Opisthokonta
Yeasts are fungi that reproduce by ordinary cell division or "budding". What is true of yeasts? -
Answer Yeasts multiply via asexual reproduction
Reproduction in fungi... - Answer May be sexual or asexual
In a plankton tow off the coast of Florida, you collected several embryos in the very early stages
of development. You follow these embryos as they develop over several weeks and noticed that
they have radial cleavage. The larvae have bilateral symmetry, yet the adults have radial
symmetry, with many spines protruding from the body. This animal is likely - Answer An
echinoderm
Which of the following traits is necessary for arthropods due to relatively low surface area to
volume ratio? - Answer circulatory system
Which of the following animals is most closely related to Dr. Angell? - Answer Sea star
(Asteroidea)
True muscle tissue and most connective tissue arise... - Answer From the mesoderm in
triploblastic animals only
You've come across a small, sessile organism sprouting from the ground. You're not sure if
you've found a fungus or a plant. Which of the following tests could help you determine this? -
Answer Chemically testing if the cell wall is made of chitin
Animals have a ________ life cycle and are dominated by the _______ stage. - Answer
gametic, diploid
Which part of a fungi produces spores for reproduction? - Answer Fruiting body
Correct Answers 2026-2027 Updated.
In bilaterally symmetric animals, neural elements typically concentrate in the head, which is at
the _____________ end of the animal. - Answer Anterior
You find a homeothermic vertebrate that lays eggs. It could belong to one of which pair of
groups? - Answer birds or monotremes
Which trait is commonly found in both of these two groups: Chondrichthyans (Cartilaginous
fishes) and Osteichthyans (Bony fishes). - Answer Hinged jaws
You are walking along the beach and find an organism that lacks symmetry, into which group
does it belong? - Answer Porifera
Vertebrates and tunicates both have... - Answer A notochord
Crustaceans, insects and chelicerates and nematodes all share the following trait: - Answer A
cuticle
Which of the following is not a reptile? - Answer northern leopard frog
What is believed to be the most significant result of the evolution of the amniotic egg? - Answer
Tetrapods are no longer tied to the water for reproduction.
In both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic
partner? - Answer Inorganic nutrients
This animal has a pseudocoelom, a cuticle and longitudinal muscles but not circular muscles.
Based on that information, you would conclude that it is... - Answer a nematode
A pseudocoelom... - Answer Can help in movement as it functions as a hydrostatic skeleton
Suppose a researcher for a pest-control company developed a chemical that inhibited the
development of an embryonic mosquito's endodermal cells. Which of the following would be a
likely mechanism by which this pesticide works? - Answer The mosquito would have trouble
digesting food, due to impaired gut function.
, Which of the following are derived characteristics of mammals? - Answer hair, endothermy,
milk
An aquatic predatory animal is a fast swimmer and chases prey through the ocean. Which of the
following body plans would be most advantageous? - Answer Bilateral
Fungi, along with ____________, are in the group ______________. - Answer animals,
Opisthokonta
Yeasts are fungi that reproduce by ordinary cell division or "budding". What is true of yeasts? -
Answer Yeasts multiply via asexual reproduction
Reproduction in fungi... - Answer May be sexual or asexual
In a plankton tow off the coast of Florida, you collected several embryos in the very early stages
of development. You follow these embryos as they develop over several weeks and noticed that
they have radial cleavage. The larvae have bilateral symmetry, yet the adults have radial
symmetry, with many spines protruding from the body. This animal is likely - Answer An
echinoderm
Which of the following traits is necessary for arthropods due to relatively low surface area to
volume ratio? - Answer circulatory system
Which of the following animals is most closely related to Dr. Angell? - Answer Sea star
(Asteroidea)
True muscle tissue and most connective tissue arise... - Answer From the mesoderm in
triploblastic animals only
You've come across a small, sessile organism sprouting from the ground. You're not sure if
you've found a fungus or a plant. Which of the following tests could help you determine this? -
Answer Chemically testing if the cell wall is made of chitin
Animals have a ________ life cycle and are dominated by the _______ stage. - Answer
gametic, diploid
Which part of a fungi produces spores for reproduction? - Answer Fruiting body
