Plants have to store up their extra food for when they need the energy, such as in times of drought when the plant might not be able to be fed as consistently. Most often, this part of the plant is located within the root system underground. Some animals have learned to tear the plants out of the ground and eat the roots when they need the extra nutrition and water.
Organ
As in ANY living animal, its brain, then heart and lungs or gills.
What you see when you talk about carrots is the taproot.
Lungs
Any animal that breathes has a respiratory organ
It depends on the organ, animal species, and disease, but generally, with the diseased organ.
Urinary bladder
No, the rectum is the lower part of the large intestine between the colon and the anal canal. The storage organ for urine is the urinary bladder.
Most people call this an organ system.
the stomach
Grasshopper. It is an auditory organ.
The bladder stores the urine.