LABORATORY PRACTICE 



CHAPTER I 



SEEDS 



I. Take the ripened pod of a Bean Plant, and splitting it 

 open, notice : 



1. That the seeds (Beans) are attached along one edge of 



each valve (or half) of the pod. 



2. That each Bean is attached to the pod by a short stalk, 



\hefunifuhts. 



3. Make a sketch of a valve of the Bean pod with its en- 



closed beans, representing and labelling the parts. 



II. Take a Bean which has been well soaked in water 

 and examine, noticing : 



1. The general shape. 



2. The color. 



3. The scar or hilum on one side. (What caused the pro- 



duction of this scar ?) 



4. The heart-shaped purplish protuberance at one side of 



the hilum (more readily seen by the aid of a lens or 

 magnifying glass) . This is called a strophiole, and is 

 present only in a few seeds. (!/ 









