Biology 1- Unit 1 - Topic 1 - New Lives

Biology 1 - First Graders

1.1 Vocabulary 

1. brain .- Main organ of the central nervous system, located in the head; mind.
   
   
   
2. spinal cord .- nerve tissue that runs through the vertebral column.
   
   
   
3. neuron .- nerve tissue of the nervous system tha transmit information throughout the body.
   
   
   
4. stimulus.- an external influence that causes a response.
   
   
   
5. offspring.- a new organism produced by one or more parents; descendants; children.
   
   
   
   
6. male.- person or animal of the masculine gender, men and boys.
   
   
   
7. female.- person or animal of the feminine gender; women and girls.
   
   
   
8. sexual reproduction.- the process of creating a new organism that uses both male and female.
   
   
   
9. gamete .- a mature sexual reproductive cell.
   
   
   
10. ovules .- female reproductive cell;  egg
    
     
    
11. sperm .- male reproductive cell
12. 
    fertilizatilization .- the joining of a sperm and egg in the process of reproduction.
    
    
    
13. zygote.- a fertilized egg.
    
    
    
14. embryo.- begining stage of a human, animal, or plant.
    
    
    
15. fetus.- baby of a human or animal while inside the womb.
    
    
    
16. womb.- uterus; female cavity where the embryo and fetus develop.
    
    
    
17. pregnancy.- carrying a baby in the uterus.
    
    
    
18. stage.- phase or period of time; cycle 
    
    
    
19. mating.- bringing together male and female for animal reproduction.
    
    
    
20. spawning.- depositing eggs in large numbers by aquatic animals.
    
    
    
21. oviparous.- animals that produce offspring from eggs.
    
    
    
22. viviparous.- animals that develope inside the body of the mother.