At the end of the experiment, the bacteria
a. were evenly distributed throughout the chamber.
b. were clustered on the algal filament.
c. were clumped along certain areas of the algal filament.
d. were actively avoiding the algal filament.
c
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Based on what you know about the principle of parsimony, which of the following is most likely a symplesiomorphy of mosses, ferns, conifers, and flowering plants?
Given the following cladogram and list of characteristics:
A. Chlorophylls a and b
B. Vascular tissue.
C. Seeds.
D. Flowers.
E. Both chlorophylls a and b and seeds.
Widmanstätten patterns are found in ____________ meteorites
Fill in the blank(s) with correct word
A layer of membrane outside the protein coat of some viruses is called a(n)
A. capsomere. B. capsid. C. protein coat. D. envelope. E. plasmid.
Reef-building corals contain endosymbiotic _____ which provide a major portion of the coral’s nutrition
1.Sporozoans 2.Dinoflagellates 3.Euglenoids 4.Ciliates