Knight — 22 — Dictionary 



Caponise, Caponising. — Castration of a male bird. 



Caprification. — The process of pollinating figs (often by 

 attracting Fig Insects by hanging inedible caprifigs in the 

 trees). 



Carotene. — Provitamin A, C^qH^q; a group of three orange 

 coloured pigments found in plants (particularly in th chloro- 

 plasts) from which the liver manufactures vitamin A. 



Carotin. — Carotene, q.v. 



Carpel. — A floral-leaf bearing ovules. In monocarpellary 

 flowers the carpel is the ovary, style and stigma collectively. 



Carpoxenia. — Direct effect of the fertilizing pollen upon the 

 maternal tissues of the carpel, cf. Xenia. 



Caryotin. — The material comprising the nuclear reticulum 

 including both basichromatin and oxychromatin. 



Castration. — Removal, or destruction, of the male gonads 

 or testes. 



Catenation. — The formation of rings or chains by chromo- 

 somes at diakinesis. 



Catkin. — A pendulous uni-sexual spike of flowers; anient. 



Caul. — The amnion, particularly when this closely envelopes 

 the face of a child at birth. 



Cell. — The structural unit of living organisms, consisting 

 basically of nucleus, cytoplasm, and, in plants, a cell wall. 



Cell Conjugation. — Union or fusion of cells. 



Cell Division. — See under Amitosis, Mitosis and Meiosis. 



Cell Granule. — Ectosome, q.v. 



Cell Plate. — The first stage in the formation of a cell wall 

 between daughter cells. 



Cell Sap. — The more fluid material of a cell. 



Cellulose. — (CgHjj)Og)x. A carbohydrate forming the basic 

 ground substance of cell walls. 



Cenobium. — A mass of undiflferentiated cells or of uni- 

 cellular organisms, cf. Coenocyte. 



Cenogeny, Cenogenetic. — Caenogenesis, Caenogenetic, q.v. 



Central Body. — (i) Centrosome, q.v. (ii) The structures at 

 the centre of the aster during mitosis. 



Central Spindle. — A miniature spindle which, where centro- 

 somes and asters are present, may form between them, and 

 which, on the disappearance of the nuclear membrane (at 

 prometaphase) moves into the middle of the nuclear zone. 



Centric. — Possessing a centromere. 



Centric Constriction. — Spindle attachment constriction; cen- 

 tromere. 



