Define Reflex Arc Draw A Flowchart Showing The Sequence Of Events Which Occur During Sneezing

(a) Define reflex arc. Draw a flowchart showing the sequence of events which occur during … four plant hormones. Write one function…

Answers:

a) The pathway taken by nerve impulses in a reflex action called the reflex arc : 

(b)  Auxin : It promotes elongation and division of cell and root formation. 

      Gibberellins : They help in growth of stem.

       Cytokinins : They promote cell division and delay leaf ageing. 

       Abscisic acid : It prevents wilting of leaves.