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401.

Mention any three disadvantages of large population?

Answer»

Disadvantages of large population are: 

(i) Per Capita Income goes down as the national income is distributed among large number of people. 

(ii) Increasing population results in increased pressure on land and it adversely affects productivity in agriculture. 

(iii) Poverty and unemployment conditions increase day by day.

402.

Which organization provides information regarding the population of our Country?

Answer»

The Census of India

403.

Which is the largest state of India ?

Answer»

Rajasthan is the largest state of India.

404.

What is environmental resistance of population growth?

Answer»

Environmental resistance of population growth are:- 

(i) Scarcity of food and shelter; 

(ii) Natural calamities like drought, floods and; 

(iii) Biotic factors like pathogens, parasites, predators are known as environmental resistance.

405.

Which is the most populous country of the world?

Answer»

China is the most populous country of the world.

406.

Which is the most populous state of India?

Answer»

Utter Pradesh is the most populous state of India.

407.

Are the following sentences right or wrong?1. India is the fifth most populous country in the world.2. India’s average population density is 832 persons per sq. km. as per the 2011 Census.3. Brazil is the second-most populous country in the World.4. Brazil ranks fifth in the world with respect to area.5. The total population of Brazil is around 91 crores.6. In Brazil and India, population is evenly distributed.7. The central and western part of Brazil are less populated.8. The sex ratio of Brazil has been less than 1000 since centuries.9. It is observed that in Brazil, the rate of population growth is increasing.

Answer»

1. Wrong

2. Wrong.

3. Wrong.

4. Right.

5. Wrong.

6. Wrong.

7. Right.

8. Wrong.

9. Wrong.

408.

According to Census 2010, what is the total population of Brazil and what is its average population density?

Answer»

According to Census 2010, Brazil’s total population is around 19 crores and its average population density is 23 persons per sq. km.

409.

Which of the following statements is false regarding predators ?A. Tiger is an example of a predator.B. Predators keep populations under control.C. Predators help in maintaining species diversity in a communityD. If a predator is not efficient, then the prey population would become extinct.

Answer» Correct Answer - D
410.

Match the following : A. A=3, B=4, C=1, D=2B. A=4, B=3, C=2, D=1C. A=1, B=3, C=2, D=4D. A=3, B=4, C=2, D=1

Answer» Correct Answer - A
411.

Which of the following is a pioneer in xerarch succession ?A. SedgesB. LichensC. BryophytesD. Phytoplanktons

Answer» Correct Answer - B
412.

Which one of the following is a population ?A. All the plants in a forestB. All the oak trees in a forestC. A spider and some trapped flies in its webD. Earthworm that lives in a grassland along with other arthropods

Answer» Correct Answer - B
413.

Cuscuta is an example ofA. PredationB. EctoparasitismC. EndothermicD. Brood parasitism

Answer» Correct Answer - B
414.

Cuscuta is an example ofA. partial root parasiteB. partial stem parasiteC. complete stem parasiteD. complete root parasite

Answer» Correct Answer - C
415.

A true parasite is one which :A. is completely attached to the hostB. is not completely dependent on hostC. complete its life cycle in different hostsD. wholly completes its life cycle in one host

Answer» Correct Answer - A
416.

Which of the following is a partial root parasite ?A. MistletoeB. OrobancheC. GanodermaD. Sandal wood

Answer» Correct Answer - D
417.

Which one of the following organisms reproduces sexually only once in its life time ?A. MangoB. TomatoC. EucalyptusD. Banana plant

Answer» Correct Answer - C
418.

What are urban settlements?

Answer»

The settlements that generally have a high population which is mostly dependent on non-agricultural sectors are called urban settlements.

419.

Differentiate nucleated settlements and dispersed settlements.

Answer»

ln places where houses are seen in close vicinity are called nucleated settlements. The settlements where houses are located farther apart are called dispersed settlements.

420.

________ has led to increase in social evils like theft, crimes, loot, etc.(A) Increase in population(B) Increase in birth rate(C) Increase in urban population(D) Lack of education in rural areas

Answer»

Correct option is (C) Increase in urban population

421.

Give the interaction present in each.(a) Cuckoo lays her eggs in the crow’s nest (b) Orchid grows on a mango tree(c) Cuscuta growing on a shoe flower plant (d) Clown fish living among the tentacles of sea anemone(e) Ticks live on the skin of dogs(f) Mycorrhizae living on the roots of higher plants(g) Sea anemone is often found in the shells of hermit crab

Answer»

(a) Brood parasitism

(b) Commensalism

(c) Commensalism

(d) Commensalism

(e) Parasitism

(f) Commensalism

(g) Commensalism.

422.

Match the Column I with Column II and select the correct option : A. A=2, B=4, C=3, D=1B. A=3, B=4, C=2, D=1C. A=4, B=1, C=3, D=2D. A=3, B=3, C=1, D=2

Answer» Correct Answer - D
423.

Praying mantis is a good example of :A. CamouflageB. Social insectC. Mullerian mimicryD. Warning coloration

Answer» Correct Answer - A
424.

Animals have the innate ability to escape from predation Examples for the same are given below. Select the incorrect exampleA. Melanism in mothsB. Poison fangs in snakesC. Colour change in chameleonD. Enlargement of body size by swallowing air in puffer fish

Answer» Correct Answer - D
425.

The number of births per thousand people in the population is expressed as :A. Growth rateB. Conception rateC. Grude birth rateD. Reproduction rate

Answer» Correct Answer - C
426.

What will happen to a well growing herbaceous plant in the forest if it is transplanted outside the forest in a park ?A. It will grow normally.B. It may not survive because of change in its micro climate.C. It will grow well because it is planted in the same locality.D. It grows very well because the plant gets more sunlight

Answer» Correct Answer - B
427.

If a population of 50 Paramecium present in a pool increases to 150 after an hour, what would be the growth rate of population ?A. 50B. 100C. 200D. 150

Answer» Correct Answer - C
428.

If a population of 50 Paramecium present in a pool increases to 150 after an hour, what would be the growth rate of population ?A. 5 per hourB. 50 per hourC. 200 per hourD. 100 per hour

Answer» Correct Answer - D
429.

Physical factors responsible for migration.(a) Drought (b) Earthquakes (c) Cyclones (d) Discrimination

Answer»

Correct option: (d) Discrimination

430.

Economic factors responsible for migration. (a) Jobs (b) Education (c) Business (d) Improved standard of living

Answer»

Correct option: (b) Education

431.

Examples of short-term migration (a) Tourist (b) Migration in search of fodder (c) Migration of labour in sugarcane production areas (d) Migration to Mumbai for jobs

Answer»

Correct option: (d) Migration to Mumbai for jobs

432.

Are the following sentences right or wrong? Correct the wrong ones.a. Literacy rate is higher in Brazil than India.b. In Brazil, people prefer living in the south east as compared to the north east.c. The life expectancy of Indians is decreasing.d. The north-western part of India is densely populated.e. The western part of Brazil is densely populated.

Answer»

a. Right.

b. Right.

c. Wrong

d. Wrong

e. Wrong

433.

Arrange the following states of India in descending order of their population. Himachal Pradesh, Uttar Pradesh, Arunachal Pradesh, Madhya Pradesh, Andhra Pradesh.

Answer»

Descending order: Uttar Pradesh, Madhya Pradesh, Andhra Pradesh, Himachal Pradesh, Arunachal Pradesh.

434.

Arrange the states of Brazil in ascending order of their population: Amazonas, Rio de Janeiro, Alagoas, Sao Paulo, Parana.

Answer»

States of Brazil: Alagoas, Amazonas, Parana, Rio de Janeiro, Sao Paulo.

435.

An orchild growing as an epiphytes on a mango tree is an example for:A. parasitismB. predationC. mutualismD. commensalism

Answer» Correct Answer - D
436.

Dominant species represents most abundant :A. first treeB. shrub that appears for the first timeC. herb that binds the soil and provides organic matter to itD. species having major effect on physical environment

Answer» Correct Answer - D
437.

The eqn, `(Delta Nn)/(Delta Nt) = B` represents which of the following?A. NatalityB. MortalityC. Growth rateD. All of these

Answer» Correct Answer - C
438.

How can we understand the trend of population? How was census started in India?

Answer»
  • We can understand the trend of population of a region by studying, analyzing and interpreting demographic profile of population, size of population, population growth rate, birth-rate, death-rate, rural-urban population, proportion of female to male population, etc.
  • Jamshedji Tata initiated the first population census in 1871. After that, a census was conducted in 1891 and thereafter it is done every 10 years.
  • The first census of independent India was conducted in 1951.
439.

Group of organisms of the sames species in a given area at a particular time is called:A. generaB. ecosystemC. communityD. population

Answer» Correct Answer - D
440.

Geometric representation of age structure is a characteristic of :A. LandscapeB. EcosystemC. PopulationD. Biotic community

Answer» Correct Answer - C
441.

What is average density of population in India?

Answer»

382 persons per sq. km.

442.

Name the elements that determine the age structure.

Answer»

The factors which determine the age structure are:

  • Fertility
  • Mortality
  • Migration
443.

Which state has the largest poulation?

Answer»

Uttar Pradesh.

444.

What is meant by the natural growth rate of population? What does the change in population of a territory indicate at?

Answer»

The population increased in a particular region between two points of times termed as natural growth rate of population. It is calculated by Birth-Deaths. 

The change in population of a territory is an important indicator of Economic development Social upliftment Historical background Cultural background.

445.

Show in the outline map of India :(i) State and Union territory with highest population.(ii) State and Union territory with lowest population.(iii) State and UTs with population density more than 1000 per square km.(iv) State and UTs with population density less than 100 per square km.

Answer»

Do it yourself with the help of India Map.

446.

What is the density of population in India?

Answer»

382 persons per sq.km.

447.

What is the difference between Regional distribution of Population and density of population?

Answer»

Distribution of population refers to a place or area, but density of population refers to a ratio. Distribution reflects a pattern of population. It shows Whether population is scattered or concentrated at a place. But density of population shows size of population ratio between men and land.

448.

Which state has the highest density of population?

Answer»

Bihar state has the highest density of population.

449.

What is the density of population in West Bengal?

Answer»

1028 persons per sq.km.

450.

Which union territory has the highest density of population?

Answer»

National Capital Area Delhi has the largest density of population (11297).