__________ are evolved mechanisms that allow animals of the same species to share information.
Fill in the blank(s) with the appropriate word(s).
Communication signals
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The part of the vascular plant that transports sugars produced by photosynthesis to the nongreen parts of the plant is the
A. stomata. B. xylem. C. phloem. D. cuticle. E. root.
What would result if an error inside gastrulation caused too few cells inside the archenteron?
A. Too little endoderm, resulting in missing gut and organs B. Too little ectoderm, resulting in missing nervous system or skin C. Problems in muscle development D. Too little protoderm, resulting in missing organs 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 the fate of the archenteron? 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?
Which of the following is true regarding some insect tracheal systems?
a. They are associated with the blood circulatory system. b. They excrete body wastes as well as transport gases. c. Their spiracles can become clogged by spraying them with oil. d. The tracheal tubes are continually open in large terrestrial insects. e. They contain respiratory pigments to enhance oxygen transport.
The figure above illustrates a(n)
a. FAD coenzyme. b. cytosine nucleotide. c. thymine nucleotide. d. ATP molecule. e. adenine nucleotide