Free WGU Introduction-to-Biology Exam Dumps Questions & Answers

Agroup of lionsthat preys on deer constitutes which ecological level?

• A.  Ecosystem
• B.  Community
• C.  Biome
• D.  Population

Which organisms arefour-limbed, produceshelled eggs, andlack feathers?

• A.  Rodents and rabbits
• B.  Amphibians
• C.  Crocodilians
• D.  Sharks and rays

Which chromosomal set shows an abnormality most commonly associated with agenetic disorder?

• A.  XYY
• B.  Trisomy18
• C.  XX
• D.  Trisomy21

Which statement istrueabout the organisms on the vertebrate cladogram?

• A.  Birds are the only species that produce eggs with shells.
• B.  Only species with hair produce amniotic eggs.
• C.  Sharks and rays have vertebrae but lack a bony skeleton.
• D.  Amphibians are four-limbed species but lack a bony skeleton.

Using theTetrapod Cladogram (Node E), the common ancestor at locationEgives rise to which two organisms?(Choose 2 answers)

• A.  Salamander
• B.  Tiger
• C.  Lizard
• D.  Gorilla