Q.

Study the following.

(a)     Taenia – Flame cells

(b)    Asterias – Proboscis glands

(c)     Balanoglossus – Green gland

(d)    Nereis – Nephridia

Which of the above are the correct combinations of an animal and its excretory organs?

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a

(a) and (d)

b

(a), (b) and (d)

c

(a) and (b)

d

(b) and (c)

answer is D.

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Detailed Solution

Special excretory organs are absent in echinoderms (e.g., Asterias). Excretory organ of Balanoglossus (Hemichordata) is proboscis gland. Green glands occurs in crustaceans.

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