Does Detergent Affect A Plant's Growth?

Actually yes it does but depending on the type of detergent for example if eco friendly detergent is use it wont kill the plant, but compared to a plant used with water the detergent plant will be most likely shorter but will have a thick stem

Yes. This is because detergent can get rid of the layer protecting the root hairs of the plant, and the root hairs will absorb the detergent instead. Because the plant will no longer have any water or nutrients, it will die. Then the plant will become decomposed because the detergent is a chemical to the plant.

When a newly planted seed starts to sprout a growth root, Detergent kills the hair around the root of the plant, therefore killing it or causing it to grow to be small and unhealthy.

Yeah, we did that project and our plant over 3 weeks grew only 1.5 cm.

Yes the presence of plant growth affects the way the plant lives and kills the plant

Yes it does from the poisons in the detergent

I don't know I just logged od here for my science fair research