Which of the following is generally NOT a characteristic of all animals?
a) Usually undergo sexual reproduction.
b) The adult form is diploid.
c) Animals range from unspecialized single-celled to specialized multicellular forms.
d) They ingest food that is digested in a central cavity.
e) They produce an embryo that undergoes development in stages.
Answer: c) Animals range from unspecialized single-celled to specialized multicellular forms.
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Which of the following statements is accurate?
a. All Canada geese populations migrate. b. All Canada geese breed where they were raised. c. Like other migratory birds, Canada geese are protected by federal law. d. When living together, migratory Canada geese do not interbreed with nonmigratory ones. e. Nonmigratory Canada geese have more goslings (baby geese) than migratory geese
A region of separation that forms near the base of the leaf's petiole when the leaf is shed is the
A. endosperm. B. abscission zone. C. Casparian strip. D. pericycle. E. statolith.
Which of the following cell types is responsible for the cell-mediated immune response?
A) T cells B) B cells C) leukocytes D) red blood cells
Which of the following examples indicates the level of the best method for protecting biodiversity in the species-rich regions referred to as hot spots?
a. Individual elephants in the savanna b. All of the populations of all species in the savanna c. The entire population of elephants in the savanna d. The populations of all species and the abiotic components of the environment in the savanna.