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Q.

Read the following with respect to integumentary nephridia in Pheretima.
(a) These are attached to lining of the body wall of segment 3rd to last.
(b) Open their ducts into buccal cavity and pharynx.
(c) Constitute forests of nephridia in clitellar segments.
(d) They have funnel like nephrostomes collect excess fluid from coelomic chambers.
In the above, the correct statements are

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a

(a) and (c)

b

(a), (c) and (d)

c

(c) and (d)

d

(b), (c) and (d)

answer is A.

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Detailed Solution

Pharyngeal nephridia open into buccal cavity and pharynx. They have no nephrostome, but are provided with body of nephridium and nephridiopore.

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