Autecology is the
1. relation of a population to its environment
2. relation of an individual to its environment
3. relation of a community to its environment
4. relation of a biome to its environment
1. a polluted area
2. the bottom of a lake
3. a zone of transition between two communities
4. a zone of developing community
|1.||a component in the ecosystem|
|2.||composed of the plants present in the soil|
|3.||life in the outer space|
|4.||composed of all living organisms present on earth which interact with the physical environment|
Ecological niche is
|1.||the surface area of the ocean|
|2.||an ecologically adapted zone|
|3.||the physical position and functional role of a species within the community|
|4.||formed of all plants and animals living at the bottom of a lake|
If a population of 50 Paramecium present in a pool increases to 150 after an hour, what would be the growth rate of the population?
1. 50 per hour
2. 200 per hour
3. 5 per hour
4. 100 per hour
What would be the percent growth or birth rate per individual per hour for the same population mentioned in the previous question (Question 10)?
A population has more young individuals compared to older individuals. What would be the status of the population after some years?
1. It will decline
2. It will stabilize
3. It will increase
4. It will first decline and then stabilize
What parameters are used for tiger census in our country's national parks and sanctuaries?
1. Pug marks only
2. Pug marks and fecal pellets
3. Fecal pellets only
4. Actual headcounts
Which of the following would necessarily decrease the density of a population in a given habitat?
1. Natality> mortality
2. Immigration> emigration
3. Mortality and emigration
4. Natality and immigration
A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations?