PROBLEM 150 ISl 



flowers in this experiment? Why such care in the transfer of 

 pollen? What ought to happen after the transfer of the p(jllen? 



Conclusion. — 1. Remenihering that the egjjj cell from one flower 

 has united with the sperm cell of anotlier flower, if the ()j)eration 

 has been successful, what characters ought the new plant to have? 

 Explain. 



2. What is the use of hybridization? 



Problem 158 : Other methods used in filant breeding. 



Materials. — Examples of budding, grafting, layers, and slips. 

 Charts and texts. 



Observations. — Notice carefully what has been done in making 

 a tongue graft, a cleft graft. Study the steps in budding (page 256, 

 Civic Biology). Consult any 

 good book on agriculture to see ^PtO 



how layering and slipping are 



done. 



Conclusion. — 1. How might 



Pc 



\^ w^ 



these processes enable man (a) ^^ -^^ /^ /~^ 



to form new kinds of plants? /^ \^ \^ ^-X 



/, — "^J^ — ^\ 



(6) to reproduce useful plants 



{^0) 10 reproauce useiui pianis ^^ -^^^ ^^ ^-^ ^-^ y^ 

 (see page 255, Civic Biologij) ? ^P ^P [^ \^ \^ \^ 



2. What kind of reproduc- 

 tion is this called, sexual or 

 asexual? Explain your answer 

 in a well- written paragraph. 



Problem 159 : To deter^mine 

 the working of Mendel's Law. 



Materials. — Text illustra- £^^^^^£^ Q i 



tions, charts, material illustrating 

 Mendel's Law. 



Observations. — Study the il- 





lustrations very carefully. No- Diagram to Illustratk Mkn^el'8 Law. 



•^ ' White Dominant, Black Recessive, 



tice that there are three possi- c'hauacteu. 



bilitiesof offspring: those having j^ first RcMK^nition; n, second prnora- 



dominant, recessive, and mixed tion ; c. third gouerutiou. 



