36 ARTHROPODS 



Does the meadow locust make a sound ? How ? 

 Make the following drawings : 

 Left side of entire animal (Xi)- 

 Abdomen of male and female (X2). 



THE MANTIS 



Do you find the three divisions of the body? What is 

 the length of the longitudinal axis? The lateral? What 

 specializations are noticed in the body? In the head? In 

 the legs? How does the young mantis compare with the 

 old? Does it grow by molting? 



Make the following drawings : 



A dorsal view (Xi)- 



The front feet (X2). 



The face ( X4) • 



Classification. — (i) Animals are classified by collect- 

 ing their resemblances and differences. Every animal in the 

 world has something in common with every other animal, 

 and these common characteristics enable us to put them 

 into one group called the animal kingdom. This separates 

 them from the other great group of living things called the 

 plant kingdom. 



(2) The animals we have studied are dififerent in many 

 things, but we have found that they are alike in a few things. 

 Make out a list of things which have the same structure 

 in all the animals studied. Then make out a list of differ- 

 ences in the same way. 



Arrange them in a tabulated form as follows: 



Comparison of grasshopper, cricket, locust and mantis, etc. 



