What is a simple way for determining if an annelid is a member of Errantia (a polychaete) or Sedentaria (a clitellate)?
A. Possession of a closed circulatory system
B. The layout of the digestive system
C. The amount of chaetae (setae)
D. The number of segments
Answer: C
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Dissolved oxygen content in stream water is affected by
a. organic matter in the water. b. overgrowth of algae. c. water nutrient levels. d. all of the above.
Which of the following examples would be undergoing secondary succession? Check all that apply.
_____ an abandoned potato farm _____ a coastal grassland damaged by a hurricane _____ an abandoned landfill _____ rocks in a national park covered by mosses and lichens _____ a garden bed that has been weeded 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 secondary succession? 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? Reflection 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?
Leaf abscission is initiated and orchestrated by the hormone abscisic acid
____________________ Indicate whether the statement is true or false.
Which molecule below does not act as a neurotransmitter and a hormone?
a) thyroid hormone b) glycine c) dopamine d) glutamate e) eicosanoids