SOME OTHER TYPES OF INDIVIDUAL ORGANIZATION 



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insectivorous plants have leaves which are highly modified into various 

 sorts of traps. In the pitcher plants (Fig. 13.18) the vaselike leaves con- 

 tain water in which insects drown ; in the sundew the leaf is covered with 

 sticky hairs that bend and enclose the victim; in the famous Venus'- 



1 jg. 13.18. The pitcher plant Sarracenia flava, an insectivorous plant of wet flatwoods in the 

 southeastern coastal plain. (Photo by Prof. A. M. Laessle.) 



flytrap the hinged, bristle-fringed leaf closes on the prey much as does a 

 steel trap when the trigger is touched; and in the aquatic bladderworts 

 (Fig. 32.8) the leaves are hollow bladders with in-pointing bristles that 

 hold captive any small creature that enters. In all instances the animal 



