Which of the following could be examples of communication by chemicals? 

A. A dog urinating on trees, light posts, fire hydrants, and other objects.
B. A rattlesnake injecting poison as it bites its prey.
C. A male prairie chicken stamping its feet in a mating dance.
D. None of these answers is true.


A. A dog urinating on trees, light posts, fire hydrants, and other objects.

Biology & Microbiology

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Four of the five answers listed below are the results of fertilization. Select the exception

a. fruit b. seed c. embryo d. pollen e. endosperm

Biology & Microbiology

Water molecules have the ability to dissolve many solutes associated with cells. Which attribute of water molecules causes this ability?

A) polarity B) nonpolarity C) hydrophobic D) the shape of the molecule

Biology & Microbiology

The ancestor to the Hawaiian crickets in the genus Laupala originally colonized the oldest of the island in the Hawaiian archipelago

As new islands were formed, individuals from the older island would colonize the younger island. Because members of this genus are flightless, these migration events were likely to be extremely rare and would include a small number of migrants. Differ-ences in allele frequencies in this genus are likely due to: a. population bottleneck. b. founder event. c. drift. d. A and C. e. B and C.

Biology & Microbiology

Thin, sheet-like structures that cover all body surfaces and line body cavities are known as

What will be an ideal response?

Biology & Microbiology