Trichomes on plants are responsible for:a
preventing water absorption on leaf surfaces.
b. deterring herbivores.
c. absorbing salts absorbed from the air.
d. the waxy structures on the petiole.
e. facilitating gas exchange.
b
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Which is true of nucleotides?
A. They are the building blocks of DNA. B. They carry chemical energy in their bonds. C. They are part of certain enzymes. D. They serve as specific signaling molecules. E. All of the choices are true.
Infection always leads to disease
Indicate whether this statement is true or false.
____ are most responsible for the symptoms of inflammation
a. Cytotoxic T cells b. Macrophages c. Mast cells d. Neutrophils e. Eosinophils
The letter "B" in the accompanying figure represents ____
a. sclerenchyma fibers b. parenchyma c. xylem d. epidermis e. phloem