Q16 of 38 Page 92

Based on relationship, fill in:

Whale: Flippers:: Bat : _______


Whale: Flippers:: Bat : Wing (Patagium)

Whale has flippers, bat has wings (patagium). These are homologous structures. Organs that are similar in structure and have a common origin but are different in their function in different animals are called homologous organs.


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14

One of the following groups contains a non-mammalian animal. Pick up the group.

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The epidermis of mammals contains __________.

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Fill in the blank.

RBC: Carrier of oxygen;


WBC: –––––––––––––


 18

Based on modifications, make the pairs:

incisor: tusks of elephant; _____________: quills of porcupine