The movement of oxygen from the outside the environment to the cells within tissues and the transport of carbon dioxide in the opposite direction is called respiration. Basically, it is an exchange of gases. Respiration is a biochemical procedure that occurs within the cells of organisms. In this procedure, the energy ATP-Adenosine triphosphate is produced by the dissolution of glucose which is further used by cells to perform various functions. Every living species from a single-celled organism to dominant multicellular organisms perform respiration. Let's explore more about Respiration In Organisms For 7th Grade Students.
1. Which of the following organism that respires by the tracheal system?
A. Cockroach
B. Earthworm
C. Butterfly
D. Mosquito
2. Gills are respiratory organs in ...
A. Earthworm
B. Amoeba
C. Cockroach
D. Fish
3. During the process of exhalation, the ribs move....
A. Up and inwards
B. Down and outwards
C. Down and inwards
D. Up and outwards
4. Amoeba breathes through its....
A. Lenticels
B. Stomata
C. Gills
D. Cell membrane
5. Breathing is a ....
A. Chemical process
B. Biological process
C. Physics process
D. None of these
6. Respiration in plants takes place through ...
A. Stomata
B. Lenticels
C. Stomata & Lenticels
D. None of these
7. Which of the following living organisms breathes through its skin?
A. Frog
B. Earthworms
C. Both of these
D. None of these
8. Birds have ________ for respiration.
A. Air bladder
B. Lungs
C. Skin
D. Gills
9. Plants intake _______ gas during respiration.
A. Nitrogen
B. Water vapour
C. Oxygen
D. Carbon dioxide
10. Breaking down of food without using oxygen is called ...
A. Dehydration
B. Aerobic respiration
C. Anaerobic respiration
D. Decomposition
11. The process of cell respiration is carried out by ....
A. Mitochondria
B. Chloroplast
C. Nucleus
D. None of the above
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