A train overtakes two persons walking along a railway track. The first person walks at 4.5 km/hr and the other walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train?

TLS Online TPP Program

#Question id: 29065

#Unit 10. Ecological Principles

Ecological and crude density of fish prey in related with predator. Water level is drop during the dry season and further increases in a rainy season. Following some observation effect are present on their density

A) Ecological density is not change with respect to water level       

B) Ecological density is gradually decrease with low water level

C) Crude density increases over ecological density during low water level             

D) Ecological density increases while crude density decreases during low water level

E) There is no effect on crude density with seasonal water level

Which of the following above observation is correct?

TLS Online TPP Program

#Question id: 29066

#Unit 10. Ecological Principles

What will have not the drawbacks of Mark-recapture technique ?

TLS Online TPP Program

#Question id: 29067

#Unit 10. Ecological Principles

Which of the following statements about the birth rates (b1, b2) and death rates (d1, d2) of species 1 and 2 indicated in the figure is true?

TLS Online TPP Program

#Question id: 29068

#Unit 10. Ecological Principles

A positive correlation between population density over time and individual fitness is known as___

TLS Online TPP Program

#Question id: 29069

#Unit 10. Ecological Principles

when resources are devoted to one body structure, physiological function, or behavior, they cannot be allotted to another is observe as__

TLS Online TPP Program

#Question id: 29070

#Unit 10. Ecological Principles

Which of the following prediction is applicable for semelparous reproductive strategy?