Which of the following structures is present in both plant and animal cells but is absent in prokaryotic cells?
Correct answer: B. X-chromosome
- A. Centrioles
- B. X-chromosome
- C. Plastids
- D. Sieve-tubes
Explanation
Since prokaryotic cells do not indulge in sexual reproduction, they don't have either the X chromosomes or the Y chromosomes.
This question appeared on the UHS MDCAT 2017 paper, which you can sit online with every answer explained.
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About Prokaryotic and Eukaryotic Cells
Prokaryotic cells lack a membrane-bound nucleus and complex membrane-bound organelles, whereas eukaryotic cells contain a nucleus, specialized organelles and a cytoskeleton. Comparisons include DNA organization, ribosomes, cell walls, size, division and examples such as bacteria, archaea, protists, fungi, plants and animals.
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