#Question id: 10634
#Unit 10. Ecological Principles
Consider a population which is changing from one generation to the next as per the equation N(t) = R*N(t-1), where N(t) represents the size of the population at time t and R is a constant growth parameter. Under what condition is the population likely to go extinct?
#Question id: 10635
#Unit 10. Ecological Principles
Three important biological parameters – generation time, per capita growth rate (r) and clutch size are a function of the organism‟s body size. Which of the curves (a) or (b) represents the correct relation of each of the parameters to body size?
#Question id: 10636
#Unit 10. Ecological Principles
The demographic transition model depicts demographic changes from high- to low-level births and deaths in five stages
Stage 1 is characterized by total population numbers are low and the high birth rate is balanced by the high death rate.
B) Stage 2 is characterized by high population growth rate is results of high birth rate however, decline death rate
C) Stage 4 is characterized by decline in the proportion of the population in the reproductive age group and these changes stabilizes population size
D) Stage 3 is characterized by falling birth rates and death rates and population growth rate is zero due to the less numbers of people in the reproductive age group
#Question id: 10637
#Unit 10. Ecological Principles
Which of the following graph represent logistic growth pattern and exponential growth respectively?
#Question id: 10638
#Unit 10. Ecological Principles
Following some statement is given
A- Mortality rate constant over age group
B- Greater proportional survival at older age
C. Follow type III survivorship curve
D. Follow type II survivorship curve
Which of the following above statement is correct?
#Question id: 10639
#Unit 10. Ecological Principles
The schematic below shows the relationship between survivorship with age (relative to maximum lifespan) in Species 1 (dashed line) and Species 2 (solid line). Which of the following inferences is compatible with this figure?
A) Species 1 follow type I survival ship curve