What is the approximate number of distinct evolutionary branches in the domain Archaea, as revealed by genome sequencing studies?
a. 3 to 4
b. 9 to 10
c. at least 12
d. at least 20
Ans: a. 3 to 4
Biology & Microbiology
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Describe the process of double fertilization in flowering plants
What will be an ideal response?
Biology & Microbiology
A milkweed plant discourages consumption by herbivores by
a. exuding a toxic sap. b. developing an appearance that mimics an undesirable plant. c. having hairy leaves. d. producing an undesirable scent. e. having thorns.
Biology & Microbiology
In terms of the evolution of nervous systems, which events tend to occur in concert with one another?
a. brains; radial symmetry b. planaria; radial symmetry c. nerve net; bilateral symmetry d. cephalization; bilateral symmetry e. cephalization; radial symmetry
Biology & Microbiology
The head louse and body louse both are of the genus
a) Trichophyton. b) Candida. c) Sarcoptes. d) Pediculus.
Biology & Microbiology