Which of the following features are used to identify chordates?
A. A notochord
B. A hollow nerve cord
C. A tail during embryonic development
D. All of the above are features used to identify chordates.
Answer: D
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Which of the following pertains to Borrelia burgdorferi?
A. Coccus B. Bacillus C. Spirochete D. Filament
The average adult carries 10 times more microbial cells (1014) than human cells (average about 1013).
Answer the following statement true (T) or false (F)
__________ refers to nutrient enrichment of any
ecosystem that is otherwise low in nutrients. Fill in the blank(s) with the appropriate word(s).
What is the first step in the pressure flow mechanism of translocation?
A) Sugar is loaded into the xylem at the source. B) Sugar is loaded into the phloem at the source. C) Water is loaded into the phloem at the source. D) Water is loaded into the phloem at the sink.