Kingdom Protista Features · NCERT Biology

The boundaries of Kingdom Protista are not well-defined because:

  1. Their cells entirely lack any membrane-bound nucleus
  2. Many members share traits with plants, fungi, or animals, so boundaries are disputed
  3. They are incapable of any form of sexual reproduction
  4. All members are consistently multicellular with clearly differentiated tissues and organs
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Correct answer: Many members share traits with plants, fungi, or animals, so boundaries are disputed

Kingdom Protista acts as a biological 'junk drawer' for unicellular eukaryotes. Because many members share traits with plants, fungi, or animals, scientists often disagree on their exact classification, making the kingdom's boundaries inherently fuzzy.

Difficulty: Medium Question 14 of 20

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