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                                                                                     [3]
(a) Differentiate between analogous and homologous structures.

(b) Select and write analogous structures from the list given below:
(i) Wings of butterfly and birds
(ii) Vertebrate hearts
(iii) Tendrils of bougainvillea and cucurbita
(iv) Tubers of sweet potato and potato
 


Solution

                                                                                              [2]
(a)
Analogous OrgansHomologous Organs(i) Structurally dissimilar(i) Structurally similarthough perform similarbut perform different function. function.(ii)They are a result of(ii)They are a result ofconvergent evolution.divergent evolution.(iii)Example: Wings of(iii)Example: Wings of BatButterfly and Birds.and Fore limb of horse.

(b) Analogous structures present in the list are [1]
(i) Wings of butterfly and Birds.
(ii) Tuber of sweet potato and potato.
 

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