Available Answers

1. 1.

   State true or false.

   1. Incorrect posture can lead to joint pains.
   2. Raw food should be washed before eating.
   3. You should change your toothbrush once every 9 months.
   4. Veins carry pure blood from various parts of the body to heart.
   5. Capillaries are the parts of circulatory system.
   6. Solids have definite volume.
   7. Filtration is the process of separating soluble substances from the solution.
   8. While burning crackers, cotton clothes should not be worn.
   9. Subsoil is the layer just below the parent material.
   10. Venus flytrap is an example of insectivorous plant.
2. 2.

   Match the following.

   a. Bottling	1. Solid
   b. Drying	2. Cactus
   c. Milk teeth	3. Temporary teeth
   d. Food pipe	4. Oesophagus
   e. Blood vessels connecting arteries and veins	5. Bedrock
   f. Ice Cube	6. Banana
   g. Regolith	7. Sauces
   h. Plant with no leaves	8. Capillaries
   	9. Parent material

    

3. 3.

   Colour the correct option.

   1. Drying/ Refrigerating removes water content of food and helps them remain edible for longer time.
   2. Fruits and vegetables are rich source of vitamins/ proteins.
   3. Mouth/ Stomach produces digestive juices that digest the food.
   4. Circulatory/ Excretory system helps in performing the excretion in our body.
   5. Arteries carry oxygenated/ deoxygenated blood.
   6. In liquid/ solid, molecules are loosely packed.
   7. Evaporation/ Condensation is the process in which gases change into liquids.
   8. Cutting down of trees causes soil erosion/ soil conservation.
   9. The tiny opening underside the leaf is called stomata/ midrib.
   10. Do not touch the switches with wet/ dry hands, you may get an electric shock.
4. 4.

   Fill in the blanks.

   1. Cooked food can be preserved by __________.
   2. Wheat and rice are excellent source of __________.
   3. A diet which contains all nutrients required for proper health and growth is called __________.
   4. The number of premolars in our mouth is __________.
   5. __________ stores the urine collected from the kidney.
   6. Protection od soil from erosion is called __________.
   7. Main vein of the leaf is called __________.
   8. Never touch electrical switches at the time of gas __________.
5. 5.

   Give one word for the following.

   1. A mineral that helps in formation of blood.
   2. Visible part of the tooth.
   3. Disease causing microbes.
   4. The process of removing harmful waste and excess water from the human body.
   5. Thin hollow tubes that transport blood throughout the human body.
   6. Ice on heating becomes water.
   7. A mixture of two or more substances.
   8. A mixture of sand, silt and clay particles.
   9. Removal of topmost soil by strong winds and heavy rains.