Saturday, 7 November 2020

Respiration (Worksheet) - CBSE Class 7 - Science (#class7Science)(#eduvictors)(#biologyforkids)

Respiration (Worksheet) - CBSE Class 7 - Science

Respiration (Worksheet) - CBSE Class 7 - Science (#class7Science)(#eduvictors)(#biologyforkids)


Directions: Fill in the blanks with suitable words

1. Food has ____________ which is released during respiration.


2.  The process of breakdown of food in the cell with the release of energy is called _______________.


3.  When breakdown of glucose occurs with the help of oxygen, it is called ____________.


4.  Organisms, such as yeast, can survive in the absence of oxygen. These are called as ___________.


5.  The taking in of air rich in oxygen into the body is called _______________.


6. During heavy physical exercise when we respire anaerobically and partial breakdown of glucose produces _______ acid, that causes muscle cramps.


7. Breathing involves the movement of the __________ and the rib cage.


8. During inhalation, ribs move ______ and outwards and diaphragm moves _______.


9. The sudden expulsion of air from the nose (without our control over it) due to the irritation of nasal passage, is called _________.


10. When we exhale air, the presence of ____________ gas turns lime water milky.


11. Earthworm breathe through their ________ _______.


12. _________ in fish help them exchange of gases and use oxygen dissolved in water


Answers:

1. energy
2. cellular respiration
3. aerobic respiration
4. anaerobes
5. inhalation
6. lactic 
7. diaphragm
8. up, down
9. sneezing
10. carbon dioxide
11. moist skin
12. Gills

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