Which system in a multicellular organism functions most like the cytoplasm in a single- celled organism?
(1) excretion
(2) immune
(3) reproductive
(4) circulatory
Cytoplasm is the fluid that fills the cell and contains all organelles and cell parts. In a multicellular organism, excretion system excretes all the wastes our body produces. Immune system protects our body from pathogens and helps prevent sickness. Reproductive system is responsible for the sexual characteristics as we well as allowing us to reproduce and form a new generation. Circulatory system circulates blood through our body, allowing for the transport of various important molecules such as Oxygen, into and out of cells. Therefore, circulatory system in a multicellular organism is most like the cytoplasm in a single-celled organism. Choice four is the correct answer.
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