SFSU Bio 240 Exam 3 2025/2026 Exam
Questions and Correct Answers | New
Update
altruism - 🧠 ANSWER ✔✔behavior of an animal that benefits another at its
own expense.
air sacs - 🧠 ANSWER ✔✔an extension of a bird's lung cavity into a bone or
other part of the body
Amnion - 🧠 ANSWER ✔✔the innermost membrane that encloses the
embryo of a mammal, bird, or reptile
Amniota - 🧠 ANSWER ✔✔are a clade of tetrapod vertebrates comprising
the reptiles, birds, and mammals. Amniotes lay their eggs on land or retain
the fertilized egg within the mother, and are distinguished from the
anamniotes (fishes and amphibians), which typically lay their eggs in water.
Amphibia - 🧠 ANSWER ✔✔Amphibians are ectothermic, tetrapod
vertebrates of the class Amphibia.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
, archenteron - 🧠 ANSWER ✔✔the rudimentary alimentary cavity of an
embryo at the gastrula stage.
Archosaur - 🧠 ANSWER ✔✔a reptile of a large group that includes the
dinosaurs and pterosaurs, represented today only by the crocodilians.
Arthropoda - 🧠 ANSWER ✔✔An arthropod is an invertebrate animal having
an exoskeleton, a segmented body, and paired jointed appendages.
Arthropods form the phylum Euarthropoda, which includes insects,
arachnids, myriapods, and crustaceans.
Aves - 🧠 ANSWER ✔✔birds
Bilateria - 🧠 ANSWER ✔✔The Bilateria or bilaterians, or triploblasts, are
animals with bilateral symmetry, i.e., they have a head and a tail as well as
a back and a belly; therefore they also have a left side and a right side.
bivalves - 🧠 ANSWER ✔✔an aquatic mollusk that has a compressed body
enclosed within a hinged shell, such as oysters, clams, mussels, and
scallops.
blastopore - 🧠 ANSWER ✔✔the opening of the central cavity of an embryo
in the early stage of development.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
Questions and Correct Answers | New
Update
altruism - 🧠 ANSWER ✔✔behavior of an animal that benefits another at its
own expense.
air sacs - 🧠 ANSWER ✔✔an extension of a bird's lung cavity into a bone or
other part of the body
Amnion - 🧠 ANSWER ✔✔the innermost membrane that encloses the
embryo of a mammal, bird, or reptile
Amniota - 🧠 ANSWER ✔✔are a clade of tetrapod vertebrates comprising
the reptiles, birds, and mammals. Amniotes lay their eggs on land or retain
the fertilized egg within the mother, and are distinguished from the
anamniotes (fishes and amphibians), which typically lay their eggs in water.
Amphibia - 🧠 ANSWER ✔✔Amphibians are ectothermic, tetrapod
vertebrates of the class Amphibia.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
, archenteron - 🧠 ANSWER ✔✔the rudimentary alimentary cavity of an
embryo at the gastrula stage.
Archosaur - 🧠 ANSWER ✔✔a reptile of a large group that includes the
dinosaurs and pterosaurs, represented today only by the crocodilians.
Arthropoda - 🧠 ANSWER ✔✔An arthropod is an invertebrate animal having
an exoskeleton, a segmented body, and paired jointed appendages.
Arthropods form the phylum Euarthropoda, which includes insects,
arachnids, myriapods, and crustaceans.
Aves - 🧠 ANSWER ✔✔birds
Bilateria - 🧠 ANSWER ✔✔The Bilateria or bilaterians, or triploblasts, are
animals with bilateral symmetry, i.e., they have a head and a tail as well as
a back and a belly; therefore they also have a left side and a right side.
bivalves - 🧠 ANSWER ✔✔an aquatic mollusk that has a compressed body
enclosed within a hinged shell, such as oysters, clams, mussels, and
scallops.
blastopore - 🧠 ANSWER ✔✔the opening of the central cavity of an embryo
in the early stage of development.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
