Which of the following statements about tunicates indicates that these animals are chordates?
A) Larvae show segmentation, but adults do not.
B) Larvae have a dorsal hollow nerve cord, a post-anal tail, pharyngeal slits, and a notochord.
C) Larvae and adults both have a true coelom.
Answer: B
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An organism that maintains a constant body temperature is termed:
a. an endotherm. b. an ectotherm. c. a poikiotherm. d. cold blooded. e. an osmoconformer.
Identify the correct comparison between the human X and Y chromosomes.
A. Only the X chromosome is paired with a homologous match in human females. B. The X chromosome is larger than the Y chromosome. C. Only the Y chromosome is always found without a homologous match. D. Although both are sex chromosomes, they do not share the same genes. E. All of the answer choices are correct.
The Calvin cycle constructs ________, an energy-rich molecule that a plant cell can then use to make glucose or other organic molecules
A) G3P B) ATP C) NADH D) carbon dioxide
How is information unique compared to other resources?
a. Sharing it is without cost. b. Its production and sharing does not require energy. c. As it is not a tangible physical entity, it does not affect an individual's fitness. d. It does not become depleted by sharing.