What is the chromosome number of
endosperm?
a. haploid
b. diploid
c. triploid
d. quatraploid
e. it depends on which plant it is in
C
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In any physical or chemical change, the universe tends toward greater disorder. This is the ________ law of thermodynamics, or the law of thermodynamic ________
Fill in the blank with correct word.
Many clinical microbiology laboratories and public health laboratories use techniques such as microbial staining, microbial growth, enzymatic testing, fermentation testing, and microscopic analysis to identify pathogens in samples. Which categories of classical characteristics for taxonomy are represented here? (Check all that apply.)
A. Biochemical characteristics B. Molecular characteristics C. Physiological and metabolic characteristics D. Morphological characteristics
The cerebral cortex is highly folded. Why might this be an advantage for the functions of the cerebrum?
A) The increased surface area increases the area for higher-level thinking. B) The increased surface area permits greater contact between the cerebrum and the cerebellum. C) The folds form grooves that let the bones of the skull reach deeply down between brain regions. D) The folds increase the areas where sensory receptors can reach the brain's surface.
All birds practice internal fertilization, even though most male birds lack a penis.
Answer the following statement true (T) or false (F)