Which of the following would be considered to be a synapomorphy of conifers and flowering plants?
Given the following list of characteristics:
A. Chlorophylls a & b.
B. Vascular tissue.
C. Seeds.
D. Flowers.
E. Both chlofophyls a & b and vascular tissue.
C. Seeds.
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All ecosystems
A. are entirely self-sufficient. B. None of the answer choices is correct. C. need a source of external energy. D. stay exactly the same once mature. E. consist of only living organisms.
Which of the following is NOT a recycled
element of an ecosystem?
a. water b. phosphorous c. oxygen d. energy e. more than one of these
Why do beaches often have less extreme temperature variation than inland areas?
A) The ocean moderates the temperatures. B) The sand absorbs and loses heat less efficiently. C) The ocean waves reduce wind. D) Air temperatures vary with latitudes.
Suppose that a woman with normal blood clotting mates with a man who also has normal blood clotting, and that their first child is a boy who has X-linked hemophilia. Which statement best predicts the outcomes of their mating?
a. All of the children will have hemophilia. b. None of the children should have hemophilia. c. All of the boys and half of the girls will have hemophilia. d. Half of the boys and none of the girls will have hemophilia.