How does the pitcher plant digest insects? what role to ph and enzymes play in insect digestion? do the plant’s nitrate levels vary after digesting insects? what happens when a pitcher plant is grown in nitrogen-rich soil and not fed insects?

Q#1
- Carnivorous plants decoy insects by sweet scent or color.
- Not expecting threats insects sit on the plant. This catches them using mechanical traps or sticky substances. 
- Then, the plant produces digestive enzymes that break down proteins, fats and sugars which make up the body of the victims for simple compounds which plant can absorb.
Q#2. Carnivorous plants grow in mineral-poor soil, raise substances necessary for life from the bodies of trapped animals. They hunt animals, so that the surface on which they grow, no nutrients they need.
Q#3.Plants by digesting insects provide each large dose of nitrates are lacking in the soil.
Q#4.When a pitcher plant is grown in nitrogen rich soil it grows tall. Insects are it's food source so if it doesn't get any food, it will starve. 
hope i helped