QUESTIONS 



1 How does growth in many-celled organisms resemble that in one-celled 

 organisms? How do the two kinds of growth differ? 



2 How do the results of cell-division in a one-celled organism differ from 

 the results of cell-division in a many-celled organism? 



3 How does the one-celled stage of a bean plant become a many-celled bean 

 plant ? 



4 What changes besides increase in size take place in an organism passing 

 from the one-celled stage to maturity? 



5 In what parts of the human body does growth take place? In what parts 

 of a tree's body? 



6 In the one-celled stage various species are not unlike. What brings about 

 the vast differences among different kinds of adult organisms? 



7 What theories account for the successive steps in the development and 

 differentiation of an embryo? 



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