Which of the following pair of cell - shape is correct?
I. Red blood cells - Square shape
II. Muscle cells - Spindle shape
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Only II.
The pair provided includes one correct and one incorrect statement:
Red blood cells - Square shape: Incorrect. Red blood cells (RBCs) have a biconcave disc shape, not square. This shape aids in maximizing surface area for oxygen exchange and flexibility to travel through capillaries.
Muscle cells - Spindle shape: Correct. Smooth muscle cells are spindle-shaped, meaning they are elongated with tapering ends, allowing them to contract efficiently and perform their functions in the body.
Thus, only the second pair is correct.