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Excretory organs of different animals ar...

Excretory organs of different animals are given below. Choose correctly and write in the space provided.
`{:(,"Animal",,"Excretory Organ/Unit",),(A.,"Balanoglossus",(i),"Metanephridia",),(B.,"Leech",(ii),"Nephridia",),(C.,"Locust",(iii),"Flame cells",),(D.,"Liver fluke",(iv),"Absent",),(E.,"Sea urchin",(v),"Malpighian tubule",),(F.,"Pila",(vi),"Proboscis glands",):}`
`A. . . . . . . . " "B. . . . . . . .`
`C. . . . . . . . " "D. . . . . . . .`
`E. . . . . . . . " "F. . . . . . . .`

Text Solution

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A. `to` (iv) B. `to` (ii) C. `to` (v) D. `to` (iii) E. `to` (vi) F. `to` (i)
A. Balanoglossus - Proboscis glands This gland pressent in front of central sinus and excretes brown granules.
B. Leech Nephridia It helps in osmoregulation and excretion.
C. Locust Malpighian tubules These tubules open into gut and help in excretion.
D. Liver fluke Flame cells They are specialised cells in Platyhelminthes which helps in osmoregulation and excretion. These are also called protonephridia.
E. Sea urchin-absent Specialised excretory organs are absent in sea urchin.
F. Pila-Metanephridia it is a type of excretory gland or nephridium found in many types of invertebrates such as annelids, arthropods, and molluscs (in molluscs nephridia is also known as Bojanus organ).
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