Final answer:
The incorrect physical characteristic of blood among the options is 'Sweet tasting.' Blood is sticky, slightly alkaline, and heavier than water but is not known for a sweet taste.
Step-by-step explanation:
The physical characteristic of blood that is NOT correct is B) Sweet tasting. Analyzing the given options: A) Blood is indeed viscous and somewhat sticky due to its composition including plasma proteins and cells. C) Blood is slightly alkaline, with a normal pH range of about 7.35 to 7.45. D) Blood is heavier than water because it is denser and more viscous, largely due to the cells and proteins it contains. However, blood is not characterized as being sweet tasting; this is not a commonly noted physical characteristic of blood.