A maple tree's seeds occur in pairs that are enclosed and attached to flat "wings" that are made of a papery tissue. The wings' shape allows them to spin in the air as they fall from the tree; this unusual motion has earned them the nickname "helicopter
seeds." Maple tree seeds are most successful when they are dispersed by
A) wind.
B) water.
C) mammals.
D) birds.
Answer: A
You might also like to view...
With the extinction of the dinosaurs 65 million years ago, multiple niches that the dinosaurs once filled opened up and
allowed mammals the opportunity to evolve and exploit those niches. This is an example of ____.
a. sympatric speciation b. adaptive radiation c. phylogeny d. reproductive isolation e. phylogenetic isolation
Most cases of Down syndrome are caused by three copies of chromosome number ________
Fill in the blank with correct word.
Select the best response to the question. ?You are reviewing a patient's sputum culture results that have tested positive for Staphylococcus epidermidis. How do you interpret these findings?
A) The patient has a respiratory infection. B) The patient's sputum is no longer sterile. C) This is part of the patient's normal flora. D) The results are inconclusive.
Which cellular component of blood acts in blood clotting?
A. White blood cells B. Red blood cells C. Platelets D. Plasma cells E. Hemostatic cells