ROLL CALL 12:j 



Sterigma — a slender filament arising from basidium, giving rise to spores by 

 abstriction. 



Stigma — the part of a pistil which receives the pollen grains. 



Tarsal — pertaining to the tarsus or last region of the leg of an insect ; the ankle 

 bones of vertebrates. 



Tentacles — flexible organs at the oral region of an animal, used for feeling, 

 grasping, etc. 



Thallus — a simple plant body not differentiated into root, stem, and leaf. 



Thorax — the part of the body between the head and abdomen. 



Tracheae — respiratory tubes of insects. 



Tracheal gills — small winglike respiratory outgrowths from the abdomen of 

 aquatic larvae of insects. 



Triploblastic — with three primary germinal layers. 



Trochophore — free-living pelagic, ciliated larval stage. 



Tube-feet — organs of locomotion of echinoderms. 



Tuberculate — resembling or having root-swellings or nodules. 



Ungulates — hoofed animals. 



Vascular — consisting of or containing vessels adapted for transmission or cir- 

 culation of fluid. •*; 



Vein — branched vessel which carries blood to heart; rib or nervure of insect 

 wing. 



Velum — a membranous partition likened to a veil or curtain. 



Ventral — pertaining to the belly surface or under side. 



Vertebrae — bones of the vertebral column (backbone). 



Vestigial — small and imperfectly developed ; rudimentary. 



Whorl — (Bot.) circle of flowers or parts of a flower arising from one point. 

 {Zool.) spiral turn of univalve shell. 



Xanthophyll — a yellow pigment invariably associated with chlorophyll in higher 

 plants. 



Zoospore — a motile spore of either plants or animals. 



