1. Given below are names of some animals.
(i) Goat
(ii) Human beings
(iii) Cockroach
(iv) Eagle
which of the above animals form a pair of omnivores?
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (ii) and (iv)
2. Below are the names of some animals.
(i) Cow
(ii) Sheep
(iii) Horse
(iv) Ox
Which of the above are sources of milk for human beings?
(a) (i) and (iii)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iii) and (iv)
3. Name two ingredients in our food that are not obtained from plants or animals. Mention one source for each ingredient.
4. Why do organisms need food? Write two reasons.
5. Label and colour the different parts of the plant given below in Fig. 1.2.
6. Connect the animal with the food it eats by an arrow using different colours in Fig. 1.4. One is done for you.
7. Read the items of food listed below. Classify them into carbohydrate-rich, protein-rich and fat-rich foods and fill them in the given table. Moong dal, fish, mustard oil, sweet potato, milk, rice, egg, beans, butter, buttermilk (chhachh), cottage cheese (paneer), peas, maize, white bread.
| Carbohydrate Rich food Item (A) | Protein Rich food Item (B) | Fat Rich food Item (C) |
| …… | ……. | ……. |
| …… | ……. | ……. |
| …… | ……. | ……. |
8. While using iodine in the laboratory, some drops of iodine fell on Paheli’s socks and some fell on her teacher saree. The drops of iodine on the saree turned blue-black while their colour did not change on the socks. What can be the possible reason?
9. Solve the crossword puzzle given as fig. 2.1 from the clues (in blue colour) given below.
(b) fibre → yarn → fabric
(c) fabric → yarn → fibre
(d) yarn → fibre → fabric.
11. Fill in the blanks to complete the life story of cotton fibre.
My parents, cotton plants were grown in_______soil and ______climate. The plants bore fruits called______. I, the cotton fibre was separated from seeds in the cotton bolls by the process of _______. Other cotton fibres and myself were made into yarn by the process of _____. The yarn was ______to give beautiful colours and then to get cotton fabric.
Across
1. Lack of nutrients in our diet over a long period causes these diseases (10)
2. Rice and potato are rich in this type of carbohydrate (6)
3. Deficiency disease in bones making it become soft and bent (7)
4. The diet that provides all the nutrients that our body needs, in right quantities, along with an adequate amount of roughage and water (8, 4)
5. Deficiency disease with bleeding gums (6)
6. Disease caused due to deficiency of iodine (6)
Down
7. Starch and sugar in our food are rich in this type of energy-giving nutrient (13)
8. The term is given to the useful components of food (9)
9. The disease caused by a deficiency of iron in diet (7)
10. Green leafy vegetables, liver and apples are rich in this mineral (4)
11. Deficiency disease caused due to lack of vitamin B in the diet (8)
1. Lack of nutrients in our diet over a long period causes these diseases (10)
2. Rice and potato are rich in this type of carbohydrate (6)
3. Deficiency disease in bones making it become soft and bent (7)
4. The diet that provides all the nutrients that our body needs, in right quantities, along with an adequate amount of roughage and water (8, 4)
5. Deficiency disease with bleeding gums (6)
6. Disease caused due to deficiency of iodine (6)
Down
7. Starch and sugar in our food are rich in this type of energy-giving nutrient (13)
8. The term is given to the useful components of food (9)
9. The disease caused by a deficiency of iron in diet (7)
10. Green leafy vegetables, liver and apples are rich in this mineral (4)
11. Deficiency disease caused due to lack of vitamin B in the diet (8)
10. The correct sequence to get cloth is
(a) fibre → fabric → yarn(b) fibre → yarn → fabric
(c) fabric → yarn → fibre
(d) yarn → fibre → fabric.
11. Fill in the blanks to complete the life story of cotton fibre.
My parents, cotton plants were grown in_______soil and ______climate. The plants bore fruits called______. I, the cotton fibre was separated from seeds in the cotton bolls by the process of _______. Other cotton fibres and myself were made into yarn by the process of _____. The yarn was ______to give beautiful colours and then to get cotton fabric.
12. Match the terms given in column I with the statements given in column II.
| Column I | Column II |
| (a) Weaving | (i) A single yarn used to make a fabric |
| (b) Knitting | (ii) Combing of cotton fibres to remove seeds |
| (c) Spinning | (iii) Yarns are made from these thin strands |
| (d) Ginning | (iv) These are spun from fibres and then used to make fabrics |
| (e) Fibre | (v) Process of arranging two sets of yarns together to make a fabric |
| (f) Yarn | (vi) Process of making yarn from fibres |
