Pacific salmon migrate upstream and after breeding, soon die. They are termed
A) iteroparous.
B) semelparous.
C) dioecious.
D) monoecious.
B
You might also like to view...
Match the following items with the correct phrases.
_______1. The width of a typical coccus. _______2. The resolving power of the unaided eye. _______3. The resolving power of the scanning electron microscope. _______4. The resolving power of the transmission electron microscope. _______5. The resolving power of the compound light microscope. a. 0.2 nm b. 20 nm c. 0.2 ?m d. 1 ?m e. 0.2 mm
Which of the following correctly lists the terms in hierarchical order from the most inclusive
to the least inclusive?
a. kingdom, domain, class, phylum b. species, kingdom, order, family c. class, order, family, genus d. order, phylum, family, species
Fungal associations with plant roots that increase their absorptive capability are called ________
a. lichens b. ergots c. mycorrhizae d. endophytic fungi
Under which of the following evolutionary explanations for disease does antagonistic pleiotropy fall?
a. Natural selection has not had time to catch up with environmental changes. b. Natural selection lacks foresight; we are stuck with historically contingent relics of the past. c. Natural selection favors reproductive success, even at the expense of vulnerability to disease. d. Some disease symptoms, though unpleasant, are actually beneficial.