Q.
Which of the following has several larval stages in its life history?
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a
Fasciola
b
Spongilla
c
Catla
d
Hyla
answer is A.
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Detailed Solution
Fasciola has seven different developmental stages: eggs, miracidia, sporocysts, rediae, cercariae, metacercariae, and adult flukes. It has several larval stages unlike Hyla (Amphibia), Catla (Pisces) and Spongilla (Porifera).
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