Answer the following statements true (T) or false (F)
1. Animal biomass exceeds plant biomass in most ecosystems.
2. Air pollutants can increase heritable mutations.
3. Insect densities tend to decrease in elevated CO2, all things being equal.
4. Biomagnification of chemicals such as DDT results in lower trophic levels becoming enriched in these chemicals.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
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In testing a hypothesis that "territorial defense in European robins is a fixed action pattern that is released by the sight of orange feathers,"
researchers found that robins defended their territory by attacking anything that was of similar size and had an orange patch. What experiment would you perform next to determine that the color initiated the defense response? A) Repeat the experiment using a blue patch instead of an orange patch. B) Repeat the experiment by removing the patch completely. C) Repeat the experiment by using a model of a robin that was twice the size of a normal robin but with a small orange patch. D) Repeat the experiment by using a model of a robin that had an orange patch that was twice the size of a normal patch.
A recovering stroke patient complained about strange smells in his room, but no cause could be found. The doctor diagnosed this as phantosmia, or olfactory hallucination, and said it was likely due to stroke-related damage to which tissue?
A. central nervous system B. olfactory receptors C. peripheral nervous system D. nodes of Ranvier 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 olfaction? 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?
The characteristic long and narrow “pipe-like” sporophyte that emerges from the parent gametophyte is characteristic of which type of seedless plant?
a. liverworts b. hornworts c. mosses d. ferns
The passageway that transports oocytes from the ovary into the uterus is known as the
a. vagina b. uterus c. oviduct d. endometrium e. cervix