The similar basic structure of limbs in mammals, birds and reptiles makes them:
AHollow organs
BHybrid organs
CHomologous organs
DHomogenous organs
Answer & Solution
Correct answer: C. Homologous organs
1. Mammals, birds, reptiles and amphibians all have four limbs.
2. The basic structure is similar, though modified for different functions.
3. Such a homologous characteristic points to an evolutionary relationship.
_Source: NCERT Class 10 Science, Ch 9 'Heredity and Evolution'_
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