The evolutionary relationships between the eukaryotic supergroups are depicted in the diagram.Which of the following pairs of protists would be most closely related due to both of them possessing plastids?
A. archaeplastids & rhizaria
B. archaeplastids & stramenopiles
C. amoebozoans & excavates
D. rhizaria & amoebozoans
Answer: B
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Shannon diversity (Hs)
A. goes up with increases in the number of species sampled and is higher when individuals are more equitably distributed among species. B. is higher when individuals are more equitably distributed among species. C. is independent of abundance. D. increases in areas undergoing secondary succession. E. is higher when individuals are more equitably distributed among species and is independent of abundance.
A diet that does not contain any dark green vegetables, whole grains, yeast, or legumes may result in a ____
deficiency.
a. vitamin B1 b. vitamin B2 c. vitamin B6 d. folic acid e. niacin
Action potentials occur when the transmembrane potential of a neuron reaches threshold. Where is the action potential initiated on the neuron?
a. Dendrite b. Soma c. Axon hillock d. Axon
Metapopulation dynamics involve the processes of
A) emigration B) extinction C) character displacement D) All of these. E) A and B