Match the following chemicals with their descriptions. 1. abscisic acid - hormone that regulates survival functions of a plant, such as the opening and closing of stomata 2. auxins - chemicals produced by plants that stimulate stem elongation, seed germination, and flowering 3. cytokinins - chemicals produced in plants that are characterized by their ability to induce cell elongation and cell division in stems 4. ethylene - hormone that promotes ripening of fruit or blooming of flowers 5. gibberellins - chemicals that plant cells divide

Correct matches: chemicals with their descriptions. 
1. abscisic acid ( is the hormone that regulates survival functions of a plant, such as the opening and closing of stomata) 
2.  auxins (chemicals produced in plants that are characterized by their ability to induce cell elongation and cell division in stems) 
3.  cytokinins  (chemicals that helps plant cells divide)

4.  ethylene (a hormone that promotes ripening of fruit or blooming of flowers)

5.  gibberellins (chemicals produced by plants that stimulate stem elongation, seed germination, and flowering) 

the answer is "a.) well–developed vascular system."

explanation: