Cladograms allow for paraphyletic and polyphyletic groupings

Indicate whether the statement is true or false.


ANS: F, only monophyletic

Biology & Microbiology

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The Gram stain is used for bacteria that have cell walls while the acid-fast stain is used primarily for wall-less bacteria.

Answer the following statement true (T) or false (F)

Biology & Microbiology

What is the structure labeled as 9 in the accompanying figure?


a. style
b. pistil
c. ovary
d. anther
e. filament

Biology & Microbiology

If a chemical kills 85% of a population of fish, and 15% have genes to resist the chemical, the chemical is 

A. an acquired characteristic. B. responsible for causing the genes to change. C. responsible for a gene frequency change. D. None of the answers is correct.

Biology & Microbiology

The Stramenopila are a very large and diverse group that all possess ________ at some point in their life cycle.

A. an exoskeleton B. heterokont flagella C. chloroplasts D. a macronucleus

Biology & Microbiology