What is protoplasm? (A) A class of protozoan (B) The substance that forms the cell of a protozoan (C) A primitive animal similar to a protozoan (D) An animal that developed from a pro

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What is protoplasm?

(A) A class of protozoan

(B) The substance that forms the cell of a protozoan

(C) A primitive animal similar to a protozoan

(D) An animal that developed from a protozoan

Giải thích

Đáp án B

(1) The protozoans, minute, aquatic creatures each of which consists of a single cell of protoplasm