24 BIOLOGY AND HUMAN LIFE 



5. Comparison of insect with mammal 



Similarities Differences 



Bilateral symmetry Segmentation in insect, not 



Distinct head in mammal ^ 



Special organs that cor- Distinct thorax and abdo- 



respond in function men in insect 



Mouth Wings 



£ygs Number and location of legs 



£^s Differences in corresponding 



Breathing openings organs 



Legs Grasping hand in man 



Paired appendages 



6. Organs; organisms; organic 



Peculiarities of plant and animal parts 

 Structural features 

 Functional features 



Related in action to one another 

 Related in action to body as whole 

 All plants and animals made up of organs 

 Living things as organisms 

 Chemical pecuHarities of organisms 

 Organic and inorganic compounds 



7. Activities of animals Activities of plants 



Growth Growth 



Food-taking Food-taking 



Irritability Irritability 



Movement Movement 



Reproduction Reproduction 



8. Comparison of living things with non-living things 



Growth Movement 



By assimilation Irritability 



By accretion Fitness 



Origin 



QUESTIONS 



1. In what different ways is the grasshopper able to move about? 



2. What special organs does the grasshopper use in each kind of 

 locomotion ? 



3. What is there about each of these organs that fits in wdth the 

 special kind of locomotion that it serves ? 



