Growth: Phases and Types · NCERT Biology

If a leaf grows from 5 cm² to 10 cm² in one day, and another leaf grows from 50 cm² to 55 cm² in the same time, what can be said about their growth?

  1. Their absolute and relative growth rates are both different
  2. Their relative growth rates are the same as each other
  3. Their absolute rates are equal but relative rates differ
  4. Both their absolute and relative growth rates are identical
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Correct answer: Their absolute rates are equal but relative rates differ

Both leaves added 5 cm² (same absolute growth rate). However, the first leaf doubled its size (100% relative growth), while the second only added 10% (different relative growth rates).

Difficulty: Medium Question 10 of 20

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