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1. In a random mating population in equilibrium which of the following brings about a change in gene frequency in non-directional manner?

migration

mutation

random drift

selection

Question 1 of 19

2. The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?

S-shaped or sigmoid growth of this insect

The population of its predators increases enormously

The food plants mature and die at the end of the rainy season

Its population growth curve is of J-type

Question 2 of 19

3. Which one of the following is the correct statement regarding the particular psychotropic drug specified?

Morphine leads to delusions and disturbed emotions

Barbiturates cause relaxation and temporary Euphoria

Hashish causes alter thought perceptions and hallucinations

Opium stimulate nervous system and causes hallucinations

Question 3 of 19

4. Random genetic drift in a population probably results from?

constant low mutation rate

large population size

highly genetically variable individuals

interbreeding within this population

Question 4 of 19

5. The concept that population tends to increase geometrically while food supply increases arithmetically was put forward by?

Stuart Mill

Charles Darwin

Adam Smith

Thomas Malthus

Question 5 of 19

6. Genetic drift operates only in?

larger populations

island populations

smaller populations

Mendelian populations

Question 6 of 19

7. Certain characteristic demographic features of developing countries are?

high fertility high density rapidly rising mortality rate and a very young age distribution

high mortality high density uneven population growth and a very old age distributions

high fertility low or rapidly falling mortality rate rapid population growth and a very young age distribution

high infant mortality low fertility uneven population growth and a very young age distributions

Question 7 of 19

8. Consider the statement given below regarding contraception and answer as directed thereafter.

(A) Medical Termination of Pregnancy (MTP) during first trimester is generally safe.

(B) Generally chances of conception are nil until mother breast-feeds the infant up to two year.

(D) Contraception pills may be taken up to one week after coitus to prevent conception.

Which two of the above statements are correct?

A, B

A, C

C, D

B, C

Question 8 of 19

9. Amniocentesis is a process to?

know about the disease of brain

all of the above

determine any hereditary diseases in the embryo

determine any disease in heart

Question 9 of 19

10. In India human population is heavily weighed towards the younger age groups as a result of?

long life span of many individuals and high birth rate

short life span of many individuals and low birth rate

long life span of many individuals and low birth rate

short life span of many individuals and high birth rate

Question 10 of 19

11. What is the most important factor for the success of animal population?

Inter-species activity

Adaptability

Natality

Unlimited food

Question 11 of 19

12. Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposing to it is called?

mortality

biotic control

environmental resistance

fecundity

Question 12 of 19

13. Test-tube baby is one who?

is born out of the technique of fertilization in vitro

has undergone development in a test tube

has been developed without fertilization

is born out of artificial insemination

Question 13 of 19

14. If the mean and the median pertaining to a certain character of a population are of the same value the following is most likely to occur?

bi-model distribution

T-shaped curve

skewed curve

normal distribution

Question 14 of 19

15. In a population unrestricted reproductive capacity is called?

birth rate

carrying capacity

fertility

biotic potential

Question 15 of 19

16. Frequency of an allele in an isolated population may change due to?

mutation

genetic drift

gene flow

natural selection

Question 16 of 19

17. Geometric representation of age structure is a characteristic of?

population

ecosystem

biotic community

landscape

Question 17 of 19

18. The formula for exponential population growth is?

dt/dN = rN

dN/dt = rN

rN/dN = dt

dN/rN = dt

Question 18 of 19

19. Human population growth in India?

tends to reach zero population growth as in case of some animal species

can be reduced by permitting natural calamities and enforcing birth control measures

tends to follow a sigmoid curve as in case of many other animal species

can be regulated by following the National programme of family planning

Question 19 of 19

Test Name	Human Population Test
Subject	CBSE Biology
Test Type	MCQs
Total Question	19
Total Marks	38
Total Time	15 Minutes
Test Help For	CBSE Biology. CBSE Board Exams. Entrance Exams. Admissions Test. Jobs Test. General Knowledge. All Grades Exams.

Test By Subject	CBSE
Test By Topics	Human Population

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CBSE Biology Human Population Test Online

CBSE Biology Human Population Test Online

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