Question

Differentiate between homology and analogy. Give one example of each. [3]

Answer 1

[1 mark for each point]
$\begin{array}{cc}\text{Homology}& \text{Analogy}\\ \text{The organs which have similar}& \text{The organs which have same}\\ \text{origin (same internal structure)}& \text{function but are different in}\\ \text{but different functions are called}& \text{origin are called analogous}\\ \text{homologous organs.}& \text{organs.}\\ \text{Homology indicates divergent}& \text{Analogy indicated convergent}\\ \text{evolution and common ancestory}& \text{evolution.}\\ \text{Example : Wings of birds and}& \text{Example : Eye of the octopus}\\ \text{forelimbs of humans}& \text{and of mammals.}\end{array}$
[1] (any one example)