When we move from the animal kingdom to the plant kingdom, we use the term "division" rather than the term
A) family.
B) phylum.
C) class.
D) genus.
Ans: B) phylum.
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What benefit do legumes derive from Rhizobium?
a. help make carbon dioxide more available b. increase root surface area c. nitrogen fixation
d. protection from predators e. retain water so it is more available to the plant
Immersion oil is used to prevent a specimen from drying out.
Answer the following statement true (T) or false (F)
Viruses are not yet considered an organism because they don't have cell membranes, organelles, and do not carry out vital life functions, although they do have a form of DNA (or similar RNA). A researcher proposing to categorize viruses in the tree of life would need to
A. establish any virus as a control group for experimentation with established domains of organisms. B. apply his/her proposal to any newly discovered virus, since others aren't currently considered organisms. C. remember that the scientific method will prevent any changes to the current taxonomy and tree of life. D. propose that relationship to other organisms as a new hypothesis, and test viruses for shared life characteristics. E. show the importance of genetic information as a characteristic of life.
The bond in table salt (NaCl) is ____
a. polar b. ionic c. covalent d. double e. nonpolar