In a wind-pollinated species, which of these floral parts is likely to be inconspicuous or absent?  

A.  receptacle
B.  stamens
C.  pistils
D.  petals
E.  stigmas


D.  petals

Biology & Microbiology

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Lipid bilayers spontaneously form to orient the _____________ tails _____________ to minimize their contact with water

A. hydrophilic; outside B. hydrophilic; inside C. hydrophobic; outside D. hydrophobic; inside

Biology & Microbiology

Birds differ from earlier vertebrates by

a. their lack of scales. b. producing land eggs. c. the ability to maintain a constant body temperature through metabolic activities. d. the ability to fertilize eggs internally. e. their possession of a dorsal nerve cord.

Biology & Microbiology

What are the functions of the 5' cap and poly(A ) tail of mature mRNAs in eukaryotes?

What will be an ideal response?

Biology & Microbiology

After drinking a great deal of coffee (pH 5), a human's blood buffering system would need to ________ as the coffee was digested to lower the level of acid present in the blood stream.

a. release OH- b. take up H+ c. release H+ d. take up OH- e. release OH- and take up H+

Biology & Microbiology