Cephalization refers to
a. a type of symmetry.
b. a type of segmentation characteristic of
lower forms of life.
c. a group of protective cells found in the
tentacles of a polyp.
d. a transitional state in the life cycle of a
jellyfish.
e. none of these.
E
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A new winged species is discovered in the Amazon rainforest. Select the evidence that supports that this species’ wings are homologous to vertebrate animals and analogous to insect wings. Check all that apply.
_____ The wings have an underlying bone structure. _____ The wings are poisonous. _____ Blood vessels are networked through the wings. _____ The wings are covered in chitinous scales. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about homologous structures? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Some animals allow their body temperature to conform to the environment. What is the old term for these animals, and what is the newer preferred term?
A. heterotherms; homeotherms B. homeotherms; endotherms C. isotherms; poikilotherms D. poikilotherms; ectotherms E. endotherms; homeostats
For each six atoms of carbon dioxide fixed in the light-independent reactions, how many molecules of PGAL (phosphoglyceraldehyde) are produced?
a. 2 b. 3 c. 6 d. 12 e. 15
Most gastric ulcers are caused by
A) overuse of aspirin and/or ibuprofen. B) excessive mental stress. C) bacteria. D) overconsumption of alcohol.