ACTIVITY WORKSHEET , CLASS 7 (NUTRITION IN ANIMALS)

ACTIVITY WORKSHEET , CLASS 7 

(NUTRITION IN ANIMALS)

1. 

What is the type of food and mode of feeding of the following animals? Write down your observations in the given Table:

Name of animal	Kind of food	Mode of feeding
Snail
Ant
Eagle
Humming-bird
Lice
Mosquito
Butterfly
House fly

(Scraping, chewing, brewing, capturing and swallowing, sucking etc.)

2. Draw a neat and labelled diagram of human digestive system as shown below:

3. The first set of teeth grows during infancy and they fall off at the age between six to eight years. These are termed ........................ The second set that replaces them are the ........................

4.Wash your hands. Look into the mirror and count your teeth. Use your index finger to feel the teeth. How many kinds of teeth could you find? Take a piece of an apple or bread and eat it. Which teeth do you use for biting and cutting, and which ones for piercing and tearing? Also find out the ones that are used for chewing and grinding? Record your observations in Table. You can take the help of the following diagram:

Type of teeth	Number of teeth		Total          Name the type of teeth
	Lower jaw	Upper jaw
Cutting and biting teeth
Piercing and tearing teeth
Chewing and grinding teeth

5. You are given with two test tubes ‘A’ and ‘B’. In test tube ‘A’  one teaspoonful

of boiled rice; in test tube ‘B’ one teaspoonful of boiled rice after chewing it for 3 to 5 minutes are poured. Add 3–4 mL of water in both the test tubes . Now pour 2–3 drops of iodine solution in each test tube and observe. Why is there a change in colour in the test tubes?

Explain

6.  Label the areas in tongue for various tastes:

7. What  is the function of this organ?

8. 

 

8. Draw a neat and labelled diagram of amoeba. What is the function of pseudopodia/