Air around us Worksheet-7

Air around us Worksheet-7

 

True/False:

  1. Plants produce much less oxygen during photosynthesis than they consume.
  2. Air containing carbon dioxide and oxygen enters the plant through stomata where it gets used in photosynthesis and respiration.
  3. The water in the wet clothes forms water vapour and disappears into the air.
  4. During burning, carbon dioxide is produced.
  5. Nitrogen in air supports burning whereas oxygen does not.
  6. Air also contains oil.
  7. Carbon dioxide is given out as a by-product after respiration.
  8. Amphibians such as frogs breathe through their moist skin, when on land.
  9. Earthworms breathe through their skin, which is kept moist with the help of a substance called mucous.
  10. Plants produce oxygen during respiration and utilize oxygen during photosynthesis.

 

Match the following:

(1)     Match the Following Respiratory Organs With Respect to the Animals through Which They Respire

(2)   Match the Following Percentage With Respect to the Gases Present in the Air

 

Answer Key:

True/False:

  1. False
  2. True
  3. True
  4. True
  5. False
  6. False
  7. True
  8. False
  9. True
  10. False

Match the following:

(1)     1-d    2-a    3-b    4-c

(2)     1-b    2-c    3-a