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Q.

Study the following statements.
a) Digestion is both extracellular and intracellular in jelly fishes and comb jellies.
b) Sperms are produced by male tapeworms and filaria worms while ova are produced by female worms.
c) In Nereis paired ganglia are connected to lateral nerves by double dorsal nerve cord.
d) The head of Pila has sensory tentacles.
Which of the above are true?

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An Intiative by Sri Chaitanya

a

a and c

b

a and d

c

b and c

d

 b and d

answer is A.

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Detailed Solution

There are no separate male and female tapeworms (they are hermaphrodites). Nereis has double ventral nerve cord

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