Which of the following is a genetic disorder in which a person bleeds excessively because of a faulty gene for a clotting factor?
A) B blood type
B) anemia
C) hemophilia
D) color blindness
C
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Only 100 living species are known in this Ecdysozoan phylum. Called velvet worms, they have jaws,
an open circulatory system, and relatively large brains.
a. Arthropoda b. Onychophora c. Nemertea d. Annelida e. Nematoda
The realized niche for the green anole was determined by:
a. a limiting resource. b. competition. c. symbiosis. d. coevolution. e. disease
Single-celled eukaryotic cells belong to which of the following domains?
A. Fungi B. Eukarya C. Animalia D. Plantae
According to the pressure-flow hypothesis, which of the following statements is NOT true?
a) Water moves from the xylem to the phloem of a plant. b) Water is necessary for sugars to move through phloem. c) Phloem is able to move sugars in either direction to meet the nutritional needs of the plant. d) The movement of water into a nutrient-rich region of the phloem decreases the pressure in that region.