The development of septa in the hyphae of fungi was an important evolutionary step. Why?
A. If a hypha is damaged, fungi can seal
septa pores to prevent cytoplasmic leakage.
B. If a hypha is damaged, septa can secrete
chemicals to attract symbiotic cyanobacteria.
C. Septa can produce fungal spores during
both sexual and asexual reproduction.
D. Septa can produce different fungal mating
types that aid in sexual reproduction.
A
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As N approaches K for a certain population, which of the following is predicted by the logistic equation?
A) The growth rate will not change. B) The growth rate will approach zero. C) The population will show an Allee effect. D) The population will increase exponentially. E) The carrying capacity of the environment will increase.
Which biome is generally found between the
polar ice cap and boreal forests?
a. desert b. taiga c. grassland d. estuary e. tundra
We recognize three levels of biodiversity: genetic diversity, species diversity, and
__________diversity. Fill in the blank(s) with the appropriate word(s).
The basic shape of a DNA molecule is the _____.
A) base pair B) sugar-phosphate backbone C) single helix D) double helix