Which involves the greatest variety of cell types?
A B C D
a tissue an organ an organ system an organism
Question: Which involves the greatest variety of cell types?
(A) a tissue
(B) an organ
(C) an organ system
(D) an organism

Answer: (D) an organism
Answer: (B) an organ
Question: Which involves the greatest variety of cell types?
(A) a tissue
(B) an organ
(C) an organ system
(D) an organism
Answer: (D) an organism