448 GLOSSARY 



alent to the "plastids" of Schimper, including "anaplasts" (amyloplasts), 



"autoplasts" (chloroplasts), and chromoplasts. (A. MEYER, 1882-83.) 

 Yolk-nucleus, a word of vague meaning applied to a cytoplasmic body, single or 



multiple, that appears in the ovarian egg. [Named " Dotterkern " by CARUS, 



1850.) 

 Zy'gote or Zy'gospore (vyov, a yoke), the cell produced by the fusion of two 



conjugating cells or gametes in some of the lower plants. 



