Tlie Flantlet. 



35 



plum, peach and cherry, the enlarging plantlet is often 

 unable to burst the seed-case, hence geimiuation cannot 

 take place unless assisted by the expanding power of 

 frost, or long exposure to moisture which softens the 

 seed-case, or unless the seed-case is cracked before the 

 seeds are planted (37). 



45. The Roots promptly start, as the hypocotyl emer- 

 ges from the seed-case — the main (primary) root from 

 its point, and the branch (lateral) roots from its side. 

 Sometimes root-hairs (101) may be disti-nctly seen, espe- 

 cially when seeds germinate in the seed-tester (39). 



By studying Pigs. 8 to 11, we may learn more of the 

 germinating process. 



Fic;. 8. Plantlet Fig. 9. Plantlet Fig. 10. Plantlet Fig. 11. Plantlet 

 of pumpkin. of bean. of Indian corn. of pea. 



In the pumpkin and bean, the seed-leaves (cotyledons) are lifted above 

 the surface of the soil in germination. 



In the pea, the cotyledons are not lifted above the surface of the soil in. 

 germination. 



