ADAPTATION OF A FISH Class4-EVS

ADAPTATION

Q:- What is called adaptation ?

A) An organism has certain peculiarities that helps it to live in its dwelling place.This is called adaptation.

 

Q:- Adaptations of a Fish 

A) * Boat shaped body

     * The fins helps to swim in water

     * Gills help to breathe in water

 Body parts of a fish

 

  

Mouth

Eyes

Gills(ചെകിള )

Gill cover(ചെകിള മൂടി )

Fins(ചിറകുകൾ )

Scales(ചെതുമ്പൽ)

Tail 

Write the name of some fishes?

Karimeen(pearl spot-Our state fish)

Salmon

Mackerel

Tuna

Varaal

Chempally(climbing perch) 

How do fishes breathe in water?

 Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers on both sides of the throat.Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills.

    What are the uses of scales?(ചെതുമ്പലുകൾ കൊണ്ടുള്ള ഉപയോഗങ്ങൾ )

A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most fishes is covered with these protective scales.It protects fishes from heat and cold.

Difference between the scales of sardine(ചാള ) and mackerel(അയല )

The scales of the mackerel are so small,that its skin feels very soft.Sardine has no scales on its head ,and its scales are big.

Stingray fish(തിരണ്ടി)

Do you know? The eyes are on top of their bodies and their mouths on the undersides, stingrays cannot see their prey after capture; instead, they use smell. Stingrays settle on the bottom while feeding, often leaving only their eyes and tails visible. 

ACTIVITY

A fish can live in water.But a squirrel can't. Explain with the help of pictures.

 

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