WOOD'S CLASS-BOOK OP BOTANY. X 



Show the coiled embryo in fig. 475. 



Show the bursting embryo in fig. 476. 



Show the liberated embryo in tigs. 477, 478, 479, 480. 



612. What becomes of the radicle ? Of the cotyledons? 

 How does the plumule develop ? Show by the figures. 



613. In what plants do the cotyledons remain below ? 



014. Show by figs. 481, 482, how the monocotyledon germinates. 



615. What the three conditions requisite for germination ? 



616. Why is moisture requisite ? 



617. Why air ? Whence comes the sugar ? 



618. What degrees of warmth ? Give some strange exceptions. 



620. What good explanation of the downward tendency of the root can you give ? 



CHAPTER XV. 



621. In the lowest Cryptogams, are the parts distinct ? 

 In the higher, how is it? 



622. How are they distinguished from the Phasnogams ? 



623. What is said of the root, stem, and leaves in Fungi, etc. ? 

 (Nor*. This chapter may be as well reviewed by the topics as by questions.) 



P AKT SECOND. 



CHAPTER I. 



638. Of what is all vegetable structure composed ? 



639. How is the cell denned? What is the primary form of the cell? 



641. Mention three general types. 



642. Whence do the casual forms result ? Name some of them. 

 43. What is the size of vegetable cells ? 



044. Of what length are some wood-cells and bark-cells ? 



645. Describe the two layers of the cell-wall. 



646. How may we bring the primordial utricle to view as in fig. 568 ? 

 047. How does it appear that the cell-wall is porous ? 



648. What appearance does a third layer make ? 



649. What fills up the wood-cells ? Show them by fig. 560. 



650. What the appearance of pitted cells ? 

 Illustrate these cells in figs. 569 and 570. 



051. What is the wonderful structure of spiral cells ? Show them in figs. 

 571, 572, 573, 577, and in petioles. 



652. Show an annular cell in fig. 574, and where else ? 



653. Show a scalariform cell in fig. 575, and where else ? 



654. What is the material of the outer cell- wall ? 



What are its chemical elements ? What are the chemical elements of 

 the inner cell- wall? 



655. What do the cells contain? What is cytoblast? Protoplasm? 



656. What is the condition of the coloring matter ? 



657. What is the structure and color of chlorophylle ? Describe fig. 56T. 

 058. What is the composition of the starch granules? (Figs. 579, 580.) 



660. What are raphides ? Show figs. 582, 583. 



661. Show how the cells are multiplied. 



