In flowering plants, the gametophyte
A. is larger than the sporophyte.
B. is smaller than the sporophyte.
C. is both smaller than the sporophyte and can grow independently.
D. can grow independently of the sporophyte.
E. is both larger than the sporophyte and can grow independently.
B. is smaller than the sporophyte.
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Examine Figure 44.7 in your text, paying attention to the phylogenetic position of sponges in the two phylogenies presented. If the hypothesis represented by the tree on the right is correct, as some molecular evidence suggests, (select all that apply)
A. sponges are monophyletic. B. sponges are paraphyletic. C. the common ancestor of all animals was sponge-like in appearance. D. we don't know what the common ancestor of all animals looked like. E. none of these.
Enveloped viruses
A. just require a stamp. B. have an outer lipid bilayer membrane containing various proteins. C. are surrounded by an additional layer of carbohydrate. D. envelope a cell.
A sponge body type with many chambers lined with collar cells is called:
a. asconoid. b. syconoid. c. leuconoid. d. hexactinellida. e. demospongoid.
In glycolysis, a major portion of the energy remains in the final product, which is called:
A. glucose B. citrate C. pyruvate D. glyceraldehyde 3-phosphate (G3P)