Answer the following questions in brief.
1. Write the names of two plants and their parts useful as food.
2. Why do doctors usually advise us to consume fruits instead of fruit juices?
3. Why can't our elbows bend backwards?
4. Why does a blacksmith use heat to make various tools in his business?
5. A bag of cement kept in the open gets soaked in rain. What will be its condition on
the next day?
Answers
Answer:
1) Spinach, cabbage, lettuce -Leaves)
Cauliflower, Broccoli, sunflower - Flower
2) Doctor usually advise us to consume fruits because fruits do perfect balance for health
3) Our elbow cannot move backwards because it has a hinge joint which allows the movement in one plane only.
4) Blacksmiths work by heating pieces of wrought iron or steel until the metal becomes soft enough for shaping with hand tools, such as a hammer, an anvil and a chisel. ... Because they must be able to see the glowing color of the metal, some blacksmiths work in dim, low-light conditions, but most work in well-lit conditions.
5) If due to rain, the cement bag has been wet, then the cement will react with water and will get hardened. This reaction is irreversible in nature and can not be reversed back.