Q11 of 18 Page 146

Amphibians are wonderful creatures on the earth. How do you appreciate their adaptation? (AS 6)

Amphibians like frogs are wonderful creatures present on earth. They start their life in water and are adapted to survive in water. For example, they breathe through gills in tadpole stage. When it reaches adult stage they undergo metamorphosis and adapt themselves to live in water and also on land. This proves the link between aquatic and terrestrial animals.


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9

Collect information of one lake from internet and prepare a table of organisms adapted at different zones? (AS 4)

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Write the effect of temperature on the organisms adapted in a lake and pond in a tabular form. (AS1)

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Some animals and plants survive only in certain conditions. Now a days, human activities cause damage to these conditions. What do you think about this? (AS7)

 13

In the chapter on ecosystem, we had studied about the mangrove ecosystems. What kind of abiotic conditions did you study in them? (AS1)