204 



General Biology 



They are as follows : 



Thallophytes ( 

 plant body. These are made up of : 



Algae (Chlorophyl-bearing thallophytes). 



Fungi (Thallophytes without chlorophyl) 



Bryophytes or Moss Plants ( 



Pteridophytes and their allies ( 

 and their allies. 



Spermatophytes or seed plants ( 



). Plants possessing a simple 



)• 



). The ferns 



)• 





Fig. 92. Leaf, Root, 

 Shoot and Flower. 



A. Leaf of a wil- 

 low (Salix sp.) b., 

 blade; p., petiole; s., 

 stipules. 



B. Diagram to show 

 the essential parts of 

 a "flowering" plant. 

 t.r., tap-root; b.r., 

 branch root; cot., seed- 

 leaf (cotyledon) ; *., 

 internode; a.L, leaf- 

 axil; n., node; a.b., 

 axillary bud; r., re- 

 ceptacle of floral or- 

 gans; ca., calyx; per., 

 perianth; co., corolla; 

 st., stamens (androe- 

 c i u m) ; pi., pistil 

 (gynoecium). 



(From C. 

 lission of P. 



Stuart Gager's "Fundamentals of Botany," by per- 

 Blakiston's Sons & Co., Publishers.) 



