What conclusion can be drawn regarding a community in which many species are involved in a food
web?
a. It is more fragile since organisms have more than a single food source.
b. It is more fragile since organisms have only a single food source.
c. It is more stable since organisms have more than a single food source.
d. It is more stable since organisms have only a single food source.
e. It is very prone to damage from human interference.
C
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Seed plants as a whole belong to a nontaxonomic grouping called the ____
a. angiosperms b. gnetophytes c. gymnosperms d. Spermatophyta e. tracheophytes
In this cross-section of a typical plant leaf, the are where photosynthesis takes place
A. stomata
B. mesophyll cells
C. air spaces
D. stromata
E. outer epidermis cells
Briefly describe the difference between adaptation from new mutation and adaptation from standing genetic variation in natural populations
What will be an ideal response?
Many antibiotics selectively kill bacteria and not mammalian cells because they block synthesis of the ________.
A. cytoplasm B. cytoskeleton C. cell wall D. nucleus E. plasma membrane