An embryo sporophyte is surrounded by nutritive tissue and then by a tough, protective outer coat that shelters the embryo from drought, cold, and other adverse conditions. What is the name of the protective coat?
a. seed
b. strobilus
c. ovule
d. spore
Ans: a. seed
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Connell studied two barnacle species, Balanus balanoides and Chthamalus stellatus. Where these species coexist,
____.
a. the realized niche of Balanus is smaller than its fundamental niche due to competition by Chthamalus b. the realized niche of Balanus is larger than its fundamental niche due to competition by Chthamalus c. the realized niche of Chthamalus is smaller than its fundamental niche due to competition by Balanus d. Balanus' fundamental niche includes all of Chthamalus fundamental niche e. the realized niche of Balanus is about equal to its fundamental niche
Plants gather the sun's energy with light-absorbing molecules called
a) pigments. b) thylakoids. c) chloroplasts. d) glucose.
Which animal would you predict would have the highest mass-specific metabolic rate?
A. a squid B. a lizard C. a goose D. an elephant E. a hummingbird
Synteny can be described as the:
A. degree of conservation between sequences. B. evolution of orthologs. C. evolution of paralogs. D. conserved gene order between two organisms. E. conserved number of chromosomes between two organisms.