The photosynthetic symbiont of a lichen is often a(n)
a) ascomycete.
b) green alga.
c) small vascular plant.
d) moss.
e) brown alga.
Ans: b) green alga.
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Indicate whether the statement is true or false.
Burkholderia cepacia and Pseudomonas aeruginosa can be a particular problem with ________.
A. myasthenia gravis patients B. decay of iron pipes under anaerobic conditions C. pneumonia patients D. cystic fibrosis patients
When scientists inserted the Bt toxin gene into plant cells they created a
A. transgenic plant. B. stem cell. C. new species. D. clone. E. monohybrid.
The ________ valves prevent blood from flowing back into the heart once it has left the ventricles
Fill in the blank(s) with correct word