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Embryology and Fossils

Identify the ...

Question

Identify the following pairs as homologous or analogous organs.
(i) Sweet potato and potato
(ii) Eye of octopus and eye of mammals
(iii) Thorns of Bougainvillaea and tendrils of Cucurbits
(iv) Fore limbs of bat and whale

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Solution

(i) Analogous organs
(ii) Analogous organs
(iii) Homologous organs
(iv) Homologous organs,

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Q. (a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita

Q. (a) Select the homologous structures from the combinations given below.
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent.

State the kind of evolution they represent.

Q. Read the following three statements (i - iii) and mark the right option.
(i) The thorns in Bougainvillea and tendrils in cucurbits represent divergent evolution.
(ii) The similarity in the eyes of octopus and monkeys is the result of convergent evolution.
(iii) The potato and sweet potato are the examples of homology.

Q. Identify the examples of homologous structures from the following.
(i) Vertebrate hearts
(ii) Thorns in Bougainvillea and tendrils of Cucurbita
(iii) Food storage organs in sweet potato and potato

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