22. The researcher observed that the cells in her experiment were irregular in shape and appeared very changing shape continuously.

Answer: E

Explanation:

The cells in her experiment were labile in nature.

The researcher noted that the cells were irregularly shaped and continuously changing shape, which indicates that they are labile, meaning they are capable of rapid change and adaptation.

A) glabrous

This term refers to a surface that is smooth and hairless. It does not relate to the shape or dynamic nature of the cells observed in the experiment, making this option incorrect.

B) torpid

Torpid describes a state of inactivity or sluggishness. While it may imply a lack of change, it contradicts the observation of cells continuously changing shape, rendering this option incorrect.

C) granular

Granular refers to a texture that is composed of small grains or particles. Although it describes a physical characteristic, it does not encompass the dynamic aspect of the cells’ shape changes and therefore is not the correct answer.

D) homogeneous

Homogeneous describes a uniform composition or structure. The observation of irregularly shaped cells suggests variability, which is the opposite of being homogeneous, thus making this option incorrect.

E) labile

Labile accurately reflects the observed characteristics of the cells, indicating their ability to change shape frequently and exhibit irregular forms. This dynamic nature aligns perfectly with the researcher's observations, confirming this as the correct option.

Conclusion

The correct answer is labile, as it directly corresponds to the cells’ observed irregular and continuously changing shapes. All other options fail to capture the essence of the dynamic nature of the cells, either by describing static characteristics or unrelated attributes. Thus, labile is the definitive choice in this context.