Arrange the statements below in the proper sequence of events that occur in an action potential:

I. The resting potential is re-established.

II. A stimulus depolarizes the membrane to threshold.

III. Na+ gates open and Na+ rushes into the cell.

IV. K+ gates open and K+ rushes out of the cell.

TLS Online TPP Program

#Question id: 29083

#Unit 10. Ecological Principles

Relative absorption per ppm of increase is;

I- CO2

II- Methane 

III- Nitrous oxide

IV- Chlorofluorocarbon

Arrange in decreasing order

TLS Online TPP Program

#Question id: 29084

#Unit 10. Ecological Principles

Which of the following gases has the major contribution to global warming?

TLS Online TPP Program

#Question id: 29085

#Unit 10. Ecological Principles

While studying the diversity of 4 communities, 5 species and 50 individuals were recorded from each community. The number of individuals under each species was listed as mentioned in the following table;

Which of the following is decreasing order of evenness of community?

TLS Online TPP Program

#Question id: 29086

#Unit 10. Ecological Principles

Ecologists have often partitioned the overall species diversity of a region into different components given in figure;

A-Overall differences 

B- overall richness of the region

C- Local site richness

Select the correct match

TLS Online TPP Program

#Question id: 29087

#Unit 10. Ecological Principles

Following table shows the number of individuals of different species in two communities, X and Y. Use Sorensen index determine the degree of similarity between X and Y community?

TLS Online TPP Program

#Question id: 29088

#Unit 10. Ecological Principles

Following table shows the number of individuals of different species in two communities, X and Y. Use Jaccard index determine the degree of similarity between X and Y community?