GYMNOSPERMS 215 
It is evident that the pine-tree, bearing these sporangia, 
is the sporophyte in the life-history; that is, it is the sex- 
less generation. The sporophyte has now become so prom- 
Fic. 204.—Carpellate cone of pine: A, cone partly sectioned; B, young carpel 
(sporophyll) with two ovules (sporangia); C, old carpel with mature seeds.— 
After Bessry. 
inent that it seems to be the whole plant, and it is interest- 
ing to know what has become of the gametophytes with 
their sex-organs. 
124. Gametophytes.—As the pine is a heterosporous 
plant, there are male and female gametophytes. The small 
spores (pollen grains) germinate and produce very small 
male gametophytes. As in Selaginella (§ 118), only a few 
cells are formed, and these remain in the pollen grain (Fig. 
15 
