Subphylum _______ includes scorpions and spiders, which have special additional appendages that are used mostly for feeding.
a. Chelicerata
b. Hexapoda
c. Myriapoda
d. Crustacea
a. Chelicerata
Subphylum Chelicerata, which includes scorpions and spiders, have special additional appendages that are used mostly for feeding, but in some species can also inject venom into prey.
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A severe drought is an example of a density- ____ factor that can influence population size, whereas the availability of nest sites is an example of a density- ____ factor
Fill in the blank with the appropriate word.
How many microhabitats does a redwood provide for other organisms?
a. None, but it has its own microhabitat with specific resource requirements. b. None, but many different organisms share its habitat. c. A few, because other organisms live on trees. d. Many, redwoods create a variety of microhabitats because of their large size.
Within a genus that normally produces large numbers of offspring, one particular species evolves maternal care behavior. What do you predict will happen to the survivorship curve?
A. No change is likely. B. It may change from type I to type III. C. It may change from type III to type I. D. It may change from type I to type II.
Which fuel is used most readily by the body during high intensity physical activities?
a. carbohydrates b. starch c. amino acids d. saturated fats