The __________ prevents food and fluids from
entering the __________.
a. epiglottis; larynx
b. pharynx; larynx
c. epiglottis; esophagus
d. pharynx; trachea
e. larynx; pharynx
Answer: a
You might also like to view...
Compare and contrast the structure of an herbaceous eudicot stem and that of a monocot. What will be an ideal response?
When a species lacking a defense mechanism looks like another well-defended species, it is called _____.
A. Batesian mimicry B. Mullerian mimicry C. Warning coloration D. Camouflage E. Mutation
Why do sex hormones and other steroids take much longer to produce their effects than nonsteroid hormones do?
A) Steroids are bigger, slower molecules. B) Steroids must usually be carried longer distances by the blood. C) Steroids must relay their messages via relay molecules. D) Steroids cause target cells to make new proteins, which takes time.
Why do the abalones (a type of mollusk) rarely produce hybrids?
a. Various abalones have different mating and courtship behaviors. b. Abalones do not coexist with individuals of other abalone species. c. Abalones are ecologically isolated. d. Their eggs and sperm fail to develop. e. Abalone eggs are surrounded by a membrane that can be penetrated only by sperm containing a particular enzyme.