Which feature is an adaptation by desert plants that help them conserve water?
a. Thin needle like leaves
b. Thick leaves
c. None of these would help conserve water
d. Leaf position that is parallel to the sun's rays
e. All of these are adaptations.
e
Biology & Microbiology
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Molecular clocks are based primarily on rates of
A. neutral mutations. B. favorable mutations. C. detrimental mutations. D. natural selection. E. phylogenetic trees.
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When cancer cells have the ability to migrate to other parts of the body, they are said to be
A. invasive. B. benign. C. metastatic. D. oncogenic. E. genetic.
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What type of neuron directly stimulates a muscle or gland?
a. afferent neuron b. efferent neuron c. interneuron d. afferent and efferent neurons e. afferent neurons and interneurons
Biology & Microbiology
The genetic variability produced by meiosis is
a. rare. b. male dominant. c. adaptive. d. female dominant
Biology & Microbiology