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ICSE Class 9 Answered

give the function of the following:
1. rhizobium
2. villi of intestine
3. nematocysts
4. epiglottis
5. sodium
 
give the full form of :
1. DNA 
2. AIDS
3. BCG
4. ATP
5. DDT
 
Asked by archana | 27 Dec, 2017, 12:08: AM
answered-by-expert Expert Answer
1. Rhizobium is soil bacteria that fix nitrogen inside root nodules of legumes.
2. Villi amplify the surface area for better absorption of digested food molecules. 
3. Nematocysts act as organs of defense in Coelenterates
4. The epiglottis seals off the windpipe during eating, so that food is not inhaled.
5. Sodium helps control blood  pressure and regulates the function of muscles and nerves
 
1. Deoxyribonucleic acid
2.Acquired Immuno Deficiency Syndrome
3. Bacillus Calmette Guerin
4. Adenosine Triphosphate
5. Dichloro-diphenyl-trichloroethane
Answered by Sivanand Patnaik | 27 Dec, 2017, 08:15: AM

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