1. A monophyletic group is defined by:

a. clades.
b. DNA sequences.
c. shared derived characters.
d. shared ancestral characters.
e. most common recent ancestor.

2. Which were the first organisms to release oxygen by photosynthesis?
a. algae
b. cyanobacteria
c. gymnosperms
d. flowering plants
e. green sulfur bacteria

3. Scientists are now grouping reptiles with birds and mammals because they are all vertebrates that have a(n):
a. divided brain.
b. amniotic egg.
c. mammary gland.
d. jointed appendage.
e. epidermal covering.

3. Which of the following taxa would be the least inclusive?
a. genus
b. family
c. phylum
d. order
e. class

4. Which is the largest division of the geologic time scale?
a. eon
b. era
c. epoch
d. period
e. millennium

5. Which are assemblages of abiotically produced polymers?
a. ribozymes
b. stromatolites
c. protobionts
d. endosymbionts
e. polyribosomes

6. Which of the following taxa would be the most inclusive?
a. genus
b. family
c. species
d. order
e. class

7. What was the dominant life form of the Mesozoic era?
a. fish
b. reptiles
c. mammals
d. amphibians
e. vascular plants

Attachment:- Biol_341_test_2_practicing_quiz (1).pdf