Which biome is a treeless plain that occurs around the Arctic Circle?
a. shortgrass prarie
b. taiga
c. cold desert
d. cold grassland
e. tundra
ANSWER: e
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A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the Last Universal Common Ancestor would show Archaea
A. branching off the Domain Eukarya. B. branching off the Domain Bacteria. C. as the original cells from which the others derived.
_____ is the process in which two groups of organisms living in the same habitat diverge into separate species
A. allopatric speciation B. peripatric speciation C. adaptive radiation D. co-speciation E. sympatric speciation
Refer to Figure 29-1. The structure labeled 1 is:
a. a conidium.
b. a perforated septum.
c. a hypha.
d. a basidium.
e. a spore
Consider the ringlike patterns on an earthworm and "six-pack abs" in humans. In an animal's body plan, what are they both evidence of?
a. radial symmetry b. cleavage c. segmentation d. mesenteries