Home › ICSE Class 9 › biology › Cell, the Unit of Life › Selina says the cells of an elephant and a rat are
Selina says the cells of an elephant and a rat are
AOf completely different sizes scaled with body mass
BAbout the same size, only the cell number differs
CLarger in the elephant and tiny in the rat
DSmaller in the elephant and large in the rat
Answer & Solution
Correct answer: B. About the same size, only the cell number differs
1. The chapter explicitly addresses cell size across animals.
2. It says elephants have far more cells, not larger cells.
3. Cell size is fixed by surface-to-volume needs.
4. So organisms grow by adding cells, not by enlarging them.
_Source: Selina Concise Biology Class 9, Ch 2 Cell, the Unit of Life (Mistral OCR'd PDF), section 2.5 Smallness of Cells_
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