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2015/01/24

MONTESSORI ZOOLOGY : Body Functions of Nematoda



Movement

 Some nematoda move by means
of celia that cover the body, and some
move by the contraction of muscles.


Respiration

There is no specialized organ. Respiration
 occurs by process of diffusion.



Protection

 There are no cilia, and there
is no segmentation of the body.


Support

 There is no skeleton.



Circulation

Circulation made possible by
no specialized organ. The body of the
flatworm flattens and there is diffusion.



Reproduction

 Reproduction is hemaphroditic, that is,
both male and female organs create sperm, 
which are exchanged between two individuals. 
A shell is excreted that encloses the embryo 
and yolk. Early development occurs in the uteri.


 

 Pinegreenwoods Montessori
Montessori Zoology