Need help with these---

14. Which of the following is present in an insect but not in arachnids?
a. mandibles
b. compound eyes
c. jointed appendages
d. segmentation

16. The exoskeleton of an insect
a. does not have any muscles attached to it
b. is moved by muscles that are attached to the inside of the exoskeleton
c. is thickest where the joints of the appendages are located
d. is moved only by muscles attached to the wings

-MC

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