Population Attributes-Growth, Birth Rate and Death Rate, Age Distribution NEET Questions

Biology - Ecology and Environment

Population Attributes-Growth, Birth Rate and Death Rate, Age Distribution MCQ Questions


7.
The tiger census in national parks is often based on:
A.
Camera trap of nests
B.
Pug marks and fecal pellets
C.
Direct counting of tigers
D.
Body weight measurements
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ANSWER :
B. Pug marks and fecal pellets
8.
The number of fish caught per trap is an example of:
A.
Relative density
B.
Carrying capacity
C.
Absolute density
D.
Intrinsic rate of increase
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ANSWER :
A. Relative density
9.
If a pond had 20 lotus plants last year and 8 new plants were added through reproduction, the birth rate is:
A.
0.2 offspring per lotus per year
B.
8 offspring per lotus per year
C.
0.4 offspring per lotus per year
D.
0.8 offspring per lotus per year
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ANSWER :
C. 0.4 offspring per lotus per year
10.
If 4 individuals in a laboratory population of 40 fruitflies died in a week, the death rate is:
A.
4 individuals per week
B.
10 individuals per week
C.
0.4 individuals per fruitfly per week
D.
0.1 individuals per fruitfly per week
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ANSWER :
D. 0.1 individuals per fruitfly per week
11.
Sex ratio of a population refers to:
A.
Total number of males
B.
Body size of males vs females
C.
Age of reproductive males
D.
Proportion (%) of males and females in the population
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ANSWER :
D. Proportion (%) of males and females in the population
12.
An age pyramid is a graphical representation of:
A.
Geographic spread of population
B.
Age distribution (per cent individuals of given age groups) of a population
C.
Birth rate over time
D.
Body size variation
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ANSWER :
B. Age distribution (per cent individuals of given age groups) of a population