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Why are most multicellular animals incapable of reproducing by simple cell-by-cell division?
Answer & Solution
Correct answer: D.
1. Multicellular animals have cells differentiated into tissues and organs at defined positions.
2. A cell-by-cell division process cannot reorganise a fully formed adult body part by part.
3. Hence reproduction is restricted to specialised reproductive cells.
_Source: NCERT Class 10 Science, Ch 7 "How do Organisms Reproduce", §7.2_
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