Parasite.
parasitism
A parasite is an organism that feeds on (and may live inside, or be attached to) another organism without killing it (in comparison to a predator which kills and eats other organisms). The organism upon which a parasite feeds is known as the host.
Organisms without bones, such as mollusks (snails).
They are known as Transgenic organisms
Living organisms use food for energy. Without energy, no living organism can do anything.
No for the simple reason that, on Earth, there are no ecosystems with only one single organism present. Perhaps in some hypothetical scenario an organism may survive without other organisms present, but it would be an artificially created/maintained environment.
yes,simple multicellular organism can be without organ.e.g sponges
yes,simple multicellular organism can be without organ.e.g sponges
An unicellular organism is an organism that does not have a nucleus. Two types of these organism is bacteria and archaea.
A colonial organism is a collection of one-celled organisms living together. The difference between a multicellular organism and a colonial organism is that individual organisms from a colony can, if separated, survive on their own, while cells from a multicellular life-form (e.g., cells from a brain) cannot. Multicellular organisms consist of differentiated cells that perform special tasks. The entire organism requires all the different types of cells to be present, and the individual cells can not survive without being in the organism
Prokaryotic organisms have no nucleus. This includes all bacteria, including the archea and cyanobacteria.
A sponge is an organism that has specific characteristics. It is a group of invertebrates which are organisms without "backbones" or endoskeletons.
There were no organisms before the ozone. Human life was not evolved.