What is a spermatheca?
a. a common body opening for the digestive, excretory, and reproductive systems
b. an articulated appendage that functions to manipulate sperm and eggs for fertilization
c. a specialized sac utilized by insects for long-term storage of sperm for later fertilization
d. a stone or other surface to which fish adhere clusters of eggs using natural protein glues
c. a specialized sac utilized by insects for long-term storage of sperm for later fertilization
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Which of the following would be most significant in understanding the structure of an ecological community?
I) determining how many species are present overall II) determining which particular species are present III) determining the kinds of interactions that occur among organisms of different species IV) determining the relative abundance of species A) only I and III B) only II and IV C) only I, II, and III D) only II, III, and IV E) I, II, III, and IV
When a cell reproduces by mitosis and cytoplasmic division, does its life end?
What will be an ideal response?
Competitive exclusion is based on the idea that
a. one species will hold some sort of advantage over the other one. b. no two species can completely occupy the same niche. c. the more two species overlap in their capacity to obtain and use resources the less likely they are to coexist. d. all of these are true. e. none of these are true
Figure 23.12
?
The accompanying figure illustrates the life cycle of a(n) ____.
A. zygomycete B. ascomycete C. basidiomycete D. glomeromycete E. lichen