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Evolution by Stage

a Select the ...

Question

(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

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Solution

a) Homologous structures are (i) Forelimbs of whales and bats and (iv) thorns of Bougainvillea and tendrils of Cucurbita.

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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
(b) State the kind of evolution they represent.

State the kind of evolution they represent.

Q. (a) Differentiate between analogous and homologous structures.
(b) Select and write analogous structures from the list given:
(i) Wings of butterfly and birds
(ii) Vertebrate hearts
(iii) Tendrils of bougainvillea and Cucurbita
(iv) Tubers of sweet potato and potato.

Q. 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

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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Evolution by Stage

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