BiologyThe figures given below show the results of a lab experiment in which two microbial species A and B belonging to same genus were grown in three petri dishes having same culture medium. In Petri dish-I, Species-A was grown alone for 8 weeks. In Petri dish-II, Species-B was grown alone for 8 weeks. In Petri dish-III, both the species were grown together with the same number as Petri dish-I and Petri dish-II for 8 weeks. What condition will you draw from the graphs in terms of impact of interaction on growth? Explain, giving reason.

The figures given below show the results of a lab experiment in which two microbial species A and B belonging to same genus were grown in three petri dishes having same culture medium. In Petri dish-I, Species-A was grown alone for 8 weeks. In Petri dish-II, Species-B was grown alone for 8 weeks. In Petri dish-III, both the species were grown together with the same number as Petri dish-I and Petri dish-II for 8 weeks.
 


What condition will you draw from the graphs in terms of impact of interaction on growth? Explain, giving reason.

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    Solution:

    We can conclude from the given graph of petri dish III that Sp. A grows faster than Sp. B as they are growing on the same petri dish. Sp. A and Sp. B are showing a mutualistic type of interaction. They are growing together in Petri dish-III having the same number as in Petri dish-I and Petri dish-II.

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