Suggest any two important habitual actions to your friend while eating food, keeping in view of this chapter.

Suggest any two activities to check soil erosion in your school.

Are there any common food items in your and your friends list?

Suggest any three programmes for prevention off soil pollution in view of avoiding pesticides. In your area, soil is polluted by the enormous usage of pesticides. Suggest any two programmes for prevention of soil pollution.

Write about any two animals in your list, describing the food types. eaten by them and how they get them.

Observe a cow or a buffalo while eating is food.Write your observations in your notebook Which are the parts of the cow's mouth(jaws,teeth,tongue etc,)involved in eating its food?

Observe a cow or a buffalo while eating is food.Write your observations in your notebook Do cows have teeth? Do they have teeth on both jaws

Ask your friend to think the name of any food. Now you have to guess its name.For this you can ask some question. Your friend can only answer in Yes or No . What/How many questions did you ask b efore you could guess the answer ?

Fill in the blanks with suitable words given below. Fluctuations of hormone ……………(i)……………levels results in sensation of hunger and motivation of consuming food. When you feel your stomach is full and there is no need of food any more. Another hormone ............(ii).........that gets secreted suppresses hunger . We take food into the mouth it has to be chewed thoroughly. For this purpose the...........(iii)......... muscles help in chewing actions, while the ...............(iv).......... muscles of the jaw moves the jaw up, down ,forward and backward during food mastication. The .............(v)......... nerve controls the muscles of the jaw. Under the action of ............(vi)...........nervous system Saliva is released by the salivary glands moistens the food to make chewing and swallowing easier. The salivary ............(vii)............in the saliva breaks down the starch into sugars. As a result of chewing the food is transported into the esophagus by the action of swallowing which is collimated by the swallowing center in the .......(viii)......... and the ............(ix)...........The tongue which is gustatory recognizes the taste and...........(x)............nerve plays an important role in sensation of taste. Choose the right ones. i) Leptin , ghrelin , gastrin , secretin. ii) ghrelin , Leptin , secretin , gastrin. iii) deep muscles , surface muscles , circus lard muscles, striated muscles. iv) surface muscles , deep muscles , neck muscles , long muscles. v) fifth cranial nerve , second cranial nerve , fifth facial nerve , spinal nerve. vi) central nervous system , peripheral nervous system , autonomous nervous system vii) lipase , sucrose , galactase , amylase. viii) medulla oblongata , cerebrum , 8th spinal nerve , cranial nerve, 7th cranial nerve. ix) Pons virile , brain stem medulla oblongata , mid brain . x) 6th cranial nerve , 5th cranial nerve, 10th cranial nerve , optic nerve.

Observe a cow or a buffalo while eating is food.Write your observations in your notebook Note the parts of its body involved.

Two friends are eating together on a table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of