If a population of 50 Paramecium present in a pool increases to 150 after an hour, what would be the growth rate of population?
50 per hour
200 per hour
5 per hour
100 per hour
What would be the per cent growth or birth rate per individual per hour for the same population mentioned in the previous question (Question 10)?
100
200
50
150
A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
It will decline
It will stabilise
It will increase
It will first decline and then stabilise
What parameters are used for tiger census in our country's national parks and sanctuaries?
Pug marks only
Pug marks and faecal pellets
Faecal pellets only
Actual head counts
Which of the following would necessarily decrease the density of a population in a given habitat?
Natality $>$ mortality
Immigration > emigration
Mortality and emigration
Natality and immigration