Bio 370 exam 2 clicker questions and
answers already passed
The following trait is a major apomorphy of Ostracoderms: - ANS ✔✔An exoskeleton made
mostly of endochondral bone
In which organisms would you not expect to find endochondral bone: - ANS ✔✔Hagfish and
lamprey
Living in an aquatic environment provides several challenges. To help maintain water and ion
balance, freshwater fish: - ANS ✔✔Eliminate large amounts of water through their skin and
retain ions in the body
Which of the following taxon possesses jaws? - ANS ✔✔Placoderms
Which of these adaptations make teleosts more mobile in water - ANS ✔✔Thin, overlapping
scales
Spiny fin rays are a plesiomorphy for acanthopterygii: - ANS ✔✔True
Which of these orders of Osteichthyes has a gas bladder and no lung? - ANS ✔✔Holoesti
Which of these has two atria and pulmonary circulation? - ANS ✔✔Sarcopoterygians
You are a tetrapod - ANS ✔✔True
answers already passed
The following trait is a major apomorphy of Ostracoderms: - ANS ✔✔An exoskeleton made
mostly of endochondral bone
In which organisms would you not expect to find endochondral bone: - ANS ✔✔Hagfish and
lamprey
Living in an aquatic environment provides several challenges. To help maintain water and ion
balance, freshwater fish: - ANS ✔✔Eliminate large amounts of water through their skin and
retain ions in the body
Which of the following taxon possesses jaws? - ANS ✔✔Placoderms
Which of these adaptations make teleosts more mobile in water - ANS ✔✔Thin, overlapping
scales
Spiny fin rays are a plesiomorphy for acanthopterygii: - ANS ✔✔True
Which of these orders of Osteichthyes has a gas bladder and no lung? - ANS ✔✔Holoesti
Which of these has two atria and pulmonary circulation? - ANS ✔✔Sarcopoterygians
You are a tetrapod - ANS ✔✔True
