Biology · Cell Structure and Function
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Which row correctly shows structures which contain a nucleus?
- A
Row A
- B
Row B
- C
Row C
- D
Row D
The correct answer is Row D. Mammal red blood cells do not contain a nucleus. In growing root hairs, the nucleus is positioned away from the apex. Tracheids in the xylem are without a nucleus and cytoplasm. Rows A, B, and C do not accurately represent structures containing a nucleus.
Explanation for Row A
Explanation for Row B
Explanation for Row C
Mammal red blood cells (erythrocytes) contain neither nucleus nor mitochondria. In growing root hairs, the nucleus is located at a distinct distance from the apex. One of the cell types present in the xylem, the water-conducting tissue of plants, is a vessel element or vessel member (also termed trachea or xylem vessel). Thus, Tracheids are devoid of a nucleus and cytoplasm.
Tagged under Biology · Cell Structure and Function · 2015