CTET PAPER II 2019 · PYQ · Cell Structure · medium
Which of the following statement about cells is true?
Answer
The correct answer is B: Cells of a tissue have similar structure.. A tissue is defined as a group of similar cells performing a particular function, so cells of a tissue have similar structure. Cells vary widely in shape (round, oval, elongated, branched, etc.) and size (e.g., nerve cells are very long, RBCs are small).
A.All cells are round in shape.
B.Cells of a tissue have similar structure.✓ Correct
C.Size of cells is same in a well organized organism.
D.All the cells have nucleus.
Explanation
A tissue is defined as a group of similar cells performing a particular function, so cells of a tissue have similar structure. Cells vary widely in shape (round, oval, elongated, branched, etc.) and size (e.g., nerve cells are very long, RBCs are small). Not all cells have a true nucleus—prokaryotic cells like bacteria and mature mammalian RBCs lack a true nucleus. Hence statement (2) is correct.
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