Fleas and springtails both lack wings
a. Because they never evolved wings and are both primitive insects
b. Because they are both parasites and lost wings from winged ancestors
c. Fleas are primitive but springtails lost wings when they gained their springtails
d. Springtails never had wings but fleas are derived from winged fly-like ancestors and secondarily lost wings when they became parasites
e. None of the choices are correct
Answer: d. Springtails never had wings but fleas are derived from winged fly-like ancestors and secondarily lost wings when they became parasites
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