. Which of the following cells can change its shape? A WBCS and Euglena B Platelet and Paramecium C Amoeba and WBCS D RBCs and Amoeba

To answer the question regarding which cells can change their shape, we should take into account the characteristics of the cells listed in each option:

1. White Blood Cells (WBCs): These cells can change shape significantly as they move through the bloodstream and toward sites of infection or inflammation.

2. Euglena: This is a type of single-celled organism that can change its shape due to its flexible plasma membrane and its ability to contract.

3. Platelets: While they do change shape slightly upon activation to help in blood clotting, they do not have the same degree of flexibility as some other cells.

4. Paramecium: A unicellular organism that primarily maintains a consistent shape, although it does have some flexibility in its structure.

5. Amoeba: Known for its ability to change shape dramatically as it moves and feeds, extending its body through pseudopodia.

6. Red Blood Cells (RBCs): These have a biconcave shape but do not actively change shape significantly under normal circumstances.

Now, analyzing the options:

• A: WBCs and Euglena - Both can change shape.
• B: Platelet and Paramecium - Platelets slightly change shape, but Paramecia do not significantly change shape.
• C: Amoeba and WBCs - Both can change shape significantly.
• D: RBCs and Amoeba - RBCs do not change shape significantly, while Amoebas do.

Conclusion

The best answers that highlight cells capable of significant shape change are options A (WBCs and Euglena) and C (Amoeba and WBCs). Among these, option C stands out as it includes both types that can exhibit pronounced shape change.

Final Answer

C: Amoeba and WBCs