Question

which organism didn't excrete at all..... ​

Answer 1

Answer:

Tardigrades.

Explanation:

They are small alien like critters who only excrete when they molt..

Answer 2

Demodex mites do not excrete solid waste, despite their production of it. They store it internally for their entire lives until they die and their body decays. These mites live in human skin, and it is suspected their highly unsanitary death is one reason why people get acne.

The other answer can be plants and fungi.

hope it's helpful : )