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  • The figure showing nephridal system of earthworm is given here. Identify the types of nephridia labelled as A, B and C from the list (i) to (iii) given below and selelct correct option. 

The figure showing nephridal system of earthworm is given here. Identify the types of nephridia labelled as A, B and C from the list (i) to (iii) given below and selelct correct option. 

(i) Septal nephridia 

(ii) Integumentary nephridia 

(iii) Tufts of pharyngeal nephridia 

Option: 1

 A                             B                                  C

(ii)                            (i)                                (iii)


Option: 2

 A                             B                                  C

(iii)                           (ii)                                (i)


Option: 3

 A                             B                                  C

(ii)                          (iii)                                 (i)


Option: 4

 A                             B                                  C

(i)                           (ii)                                  (iii)


Answers (1)

best_answer

As we learned 

 

Peripheral Nervous System (PNS) -

Arises from CNS. The nerves are mixed in nature. 

- wherein

2 pairs of nerve arise from cerebral ganglion connectives which supply to the wall of prostomium and peristomium.

3 pairs of nerves arise from sub pharyngeal  ganglia which supply to 2nd, 3rd and 4th segment.

2 pairs of nerves arise from peripharyngeal ganglion.

 

 

 

Posted by

Pankaj

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