Only seed plants possess ovules.
a. true
b. false
Answer: a. true
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In Cameroon, seedcrackers have either small bills (adapted for feeding on soft sedge seeds) or large bills (adapted for
feeding on hard sedge seeds). During competition for scarce resources, these birds primarily feed on the seeds for which they are best adapted. This is an example of ____ selection.
a. stabilizing b. disruptive c. frequent d. directional e. mutational
David Jablonski and colleagues found that species of bivalves with which of the following trait(s) persisted longer, and were less likely to die out, during times of background extinction?
A) epifaunal, suspension-feeding lifestyle B) wider geographic ranges C) planktonic larval stages D) All of the above. E) None of the above.
The second round of meiosis in the testes produces ____
a. primary spermatocytes b. secondary spermatocytes c. polar bodies d. spermatogonia e. spermatids
DNA codes for the sequence of amino acids in the primary structure of a protein, but not for sugars or lipids. This is because
What will be an ideal response?