The molluscan body plan is based on three major components: the foot, the visceral mass, and the _______.
A. jointed limbs
B. shell
C. mantle
D. gills
Ans: C. mantle
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Why are anionic nutrients generally mobile in soils, and thus easily leached, while cationic nutrients are relatively immobile?
A) Anions readily form crystals while cations do not B) Cations interact with clay particles and organic materials C) Cations have a stronger tendency to aggregate D) Anions are repelled from the surfaces of living roots
What do you know about electronegativity?
What will be an ideal response?
Before Mendel, most people would have predicted that a cross of a red rose with a yellow rose would produce ____
a. all red roses b. all yellow roses c. all orange roses d. about half yellow roses and half red roses e. about three-fourths red roses and one-fourth yellow roses
Antisera directed against toxins are known as (antibodies/antitoxins/anti-antibodies).
Fill in the blank(s) with the appropriate word(s).