[Question] hana hana limits and maximum usage

[Tomato God]

1. since haki negates devil fruit abilities can robin grow limbs on something coated in coa?
2. does robin have a limit on how long she can leave something out lime can she always have extra arms or does it drain her
3. can she grow any part of her body? like blood or stomache acid or bones or antibodies or hair?
4. since humans have the same parts as most other animals do you think that she could grow her own body parts in the shape of another animal and the use that to make said animal? Example could she grow her bones in the shape of a tiger then fill it up with her muscles and her brain and then cover it in her skin and her muscles and use her hair as fur to make a living breathing tiger?

 

[Lombie]

1.haki doesnt negate dfs it cn bypass the df ability like hitting a logia or cutting daz bones
so yes she can
2.dont know but maybe it drains her energy to make so many limbs
3.no
4.no she can grow just her own body parts

 

[Venomous Cobra]

1-Depends on how good the haki is
2-yes her ability is limited to what she can see only.
3-her fruit can grow up to 200(not sure if that was the number)according to wikia.the usage limit depends on her on physical strength and stamina.
4-she was skillful enough to just grow hands and legs, so I would say no for now.
5-nope.only human body limbs

 

[shinjojin]

1. To be honest, i don't know. Depends on the target's haki i guess.
2. I believe she does.
3. Hair? Yeah. Bones? Possible, but i highly doubt it. Everything else? As of right now, nope.
4. i definitely dont think so.