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3. How will you separate husk or dirt particles from a given sample of pulses before cooking.

Q4. What is sieving? Where is it used?

5. How will you separate sand and water from their mixture?

Q6. Is it possible to separate sugar mixed with wheat flour? If yes, how will you do it?

Q7. How would you obtain clear water from a sample of muddy water?

Q8. Fill up the blanks

(a) The method of separating seeds of paddy from its stalks is called ___________.

(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of ___________.

(c) Salt is obtained from seawater by the process of ___________.

(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ___________.

8. Fill up the blanks

(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of ___________.

8. Fill up the blanks

(c) Salt is obtained from seawater by the process of ___________.

8. Fill up the blanks

(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ___________.

Q9. True or false?

(a) A mixture of milk and water can be separated by filtration.

(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.

(c) Separation of sugar from tea can be done with filtration.

(d) Grain and husk can be separated with the process of decantation.

9. True or false?

(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.

9. True or false?

(c) Separation of sugar from tea can be done with filtration.

9. True or false?

(d) Grain and husk can be separated with the process of decantation.

Q10. Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice to cool it. Should you add ice to the lemonade before or after dissolving sugar? In which case would it be possible to dissolve more sugar?

1. Correct the following statements and rewrite them in your notebook.

(a) Stem absorbs water and minerals from the soil.

1. Correct the following statements and rewrite them in your notebook.

(b) Leaves hold the plant upright.

1. Correct the following statements and rewrite them in your notebook.

(c) Roots conduct water to the leaves.

1. Correct the following statements and rewrite them in your notebook.

(d) The number of petals and stamens in a flower is always equal.

1. Correct the following statements and rewrite them in your notebook.

(e) If the sepals of a flower are joined together, its petals are also joined together.

1. Correct the following statements and rewrite them in your notebook.

(f) If the petals of a flower are joined together, then the pistil is joined to the petal.

Q2. Draw (a) a leaf you have studied for Table 7.3.

Q3. Can you find a plant in your house or in your neighborhood, which has a long but weak stem? Write its name. In which category will you place it?

Q4. What is the function of a stem?

Q5. Which of the following leaves have reticulate venation?

Wheat, tulsi, maize, grass, coriander (dhania), China rose

Q6. If a plant has fibrous root, what type of venation do its leaves have?

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