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Structural Organisation In Animals

Question
CBSEENBI11001710
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Answer the following

(i) What is the function of nephridia?

Solution

Nephridia are segmentally arranged coiled tubules which act as excretory organs in the earthworms. It performs the following function:
i. Regulate the volume and composition of the body fluids .
ii. Collects excess fluid from the coelomic chamber.
iii. Delivers the wastes through a pore to the surface in the body wall
into the digestive tube.

Some More Questions From Structural Organisation In Animals Chapter

Answer in one word or one line.

(i) Give the common name of Periplanata americana.   

Answer in one word or one line.    

(ii) How many spermathecae are found in earthworm?         

Answer in one word or one line. 

(iii) What is the position of ovaries in cockroach?

Answer in one word or one line.            

(iv) How many segments are present in the abdomen of cockroach?                                     

Answer in one word or one line. 

(v) Where do you find Malpighian tubules?

Answer the following

(i) What is the function of nephridia?

Answer the following:

(ii) How many types of nephridia are found in earthworm based on their location?

Draw a labelled diagram of the reproductive organs of an earthworm. 

Draw a labelled diagram of alimentary canal of a cockroach.                                                   

Distinguish between the following

(a) Prostomium and peristomium

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