How can habitat fragmentation due to land development disrupt an ecosystem?
a) species are driven to extinction due to hunting
b) the habitat cannot support as large or diverse a population
c) too many new habitats are created
d) new species are introduced that displace existing species
Ans: b) the habitat cannot support as large or diverse a population
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In 2000, 87% of the wild rat populations in Stadtlohn, Germany was resistant to the poison bromadiolone. This
indicates that ____was/were commonly used as a rat poison(s) here, and the rat's resistance is an example of ____ selection.
a. warfarin; directional b. bromadiolone; directional c. both warfarin and bromadiolone; disruptive d. neither warfarin nor bromadiolone; stabilizing e. bromadiolone; disruptive
The adhering follicular cells that surround the egg are called the
A. corona radiata. B. pronuclei. C. outer cell mass. D. zona pellucida. E. cortical granule cells.
The structural polysaccharide of fungal cell walls is the same polysaccharide found in insect
a. exoskeletons. b. endoskeletons. c. eyes. d. cartilage.
Choose the one most appropriate answer for each.
A. LH B. Seminal vesicles C. D. E. Epididymis F. Cervix G. Placenta H. Vas deferens I. Oxytocin J. Acrosome K. L. Leydig cells M. Clitoris N. Endometrium O. FSH