Question

Part C . True or False

1. In a study examining the effects of Hurricane Frances on cyanobacterial mats from San Salvador, the researchers found that more diverse communities are better able to recover from massive disturbance if there is a high level of functional redundancy in the community.

A. true B.false

2. Quota sensing is a microbial system of stimuli and response that is important for biofilm formation and EPS production.

A. true B.false

3.The Shannon index is a measure of the degree of uncertainty in predicting the identity of the next individual sampled in a community of S species and N individuals.

A. True B.false

Answer 1

2.Quorum sensing is a microbial system of stimuli and response.In bacteria,production of intercellular cehmical signals indicates the density of population.when density reaches a certain level, gene expression occurs and coordinated group of behaviour happens like bioluminiscence or biofilm formation.Quota sensing is NOT a microbial system.Hence the statement in the question is false.

3. The Shannon index is a measure of the degree of uncertainty in predicting the identity of the next individual sampled in a community of S species and N individuals.--False, The Shannon index is an index that is used to measure species diversity in a community.It measures species diversity and not a measure of a degree of uncertainty.