Q7 of 18 Page 146

Visit a nearby pond or a lake. Record the organisms you have observed and their adaptations? (AS 4)

The adaptations observed in river ecosystem are:

i. Fishes: They have fins to dive and gills respire.


ii. Frogs: They have legs to move in water.


iii. Tadpoles: They have small legs to move in water and also gill to respire.


iv. Turtles: They have legs to move by pushing the water back.


v. Snakes: They have a slippery body to move easily by slithering.


More from this chapter

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5

If an animal of euphotic zone has to survive in abyssal zone, what adaptations are required to survive there? (AS1)

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Marine water fishes drink more water than fresh water fishes. Do you agree? Justify.

 8

Draw a lake showing different zones. Why are they called so? (AS 5)

 9

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