what is the organism that can't make it's own food?

Answer 1

Heterotrophic organisms like us and other animals, like reptiles and mammals, can't make their own food;
Parasites, like tapeworm, cuscuta etc. take it from other 'host' organisms;
And saprophytes, like mushrooms, feed on dead and decaying organisms.
Only autotrophes can make their own food, i.e., only green plants and bacteria containing chlorophyll, called autotrophic bacteria.
Hope this answers your question.

Answer 2

and am ownly 13

Answer 3

I do not know which can. I mean fully.