A cartilage disk that joins the two pelvic bones in the anterior region of the pelvic girdle is known as the ________
A) sacrum B) pubic symphysis C) patella D) pelvis
Answer: B
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A major organism involved in associative nitrogen fixation in the rhizosphere of many plants is ________.
A. Rhizobium B. Frankia C. Azospirillum D. Pseudomonas
The human eye’s protective mucus membrane is the ____
a. retina b. sclera c. cornea d. conjunctiva e. aqueous humor
If you were to study all of the insect-eating birds in a forest, you would see that many birds eat insects,
yet you may not see any evidence of competition. What is the most probable explanation? a. The birds have coevolved. b. The birds are exhibiting resource partitioning. c. The birds are exhibiting intraspecific competition only. d. There is no keystone species in this community. e. There is not enough species richness to see evidence of competition.
Which of the following best describes a "species"?
a. a group of individuals producing similar vestigial structures b. a group of individuals developed through selective breeding c. a group of populations with homologous structures d. a group of populations that evolved independently e. a group of similar fossils