solve the following mcq`s.


1:-The scientific study of the distribution and abundance of life and organism interaction isA) Environment
Ecology
Embryology
Palaeontology

2) Theory of ‘Natural selection’ was presented by
A) Darwin
Alfred Wallace
Mandel
Darwin & Alfred Wallace


3) ‘An Essay on the principle of population’ was published by
A) William Godwin
Simon
Malthus
Alfred Wallace


4) The organic and inorganic compounds found in the environment are termed as
A) Biotic substances
Ecological compounds
Abiotic substances
Environmental compounds

5) Seismology is the study of
A) Earthquakes
Ocean Waves
Climate Change
Dam Structures

6) Xenocentrism is a term used for people who
A) Like their own culture
Like some other culture
Believe in social norms
Don’t believe in social norms

7) Influencing a group of people to move towards its goal setting or goal achievement is called
A) Management
Leadership
Guidance
Motivation

8) In order for a species to survive, it must be able to
A) Consume a wide variety of food
Reproduce successfully
Maintain a constant body temperature
Destroy competing species

9) You are interested in doing an experiment on bacteria. You notice that bacteria like to grow on agar gel. Every time you look at a dish of agar, you see bacterial colonies. What do you call this step of the scientific method?A) Fact
B) Hypothesis
C) Theory
D) Observation

10) After looking at lots of dishes of agar and finding bacteria on every one, you say to yourself, 'Barring other factors, bacteria will grow on an uncovered dish of agar at room temperature.' What have you just created?
A) A theory
B) An explanation
C) A fact
D) A variable

11) You have read research that claims that garlic juice kills bacteria. You decide to do an experiment to see if garlic juice will prevent bacteria from growing on agar gel. You state, 'I think bacteria will not grow on agar gel that has been treated with garlic juice.' This statement is a
A) Fact
B) Observation
C) Hypothesis
D) Explanation

12) Interactions between plants and their pollinators isA) A mutualism.
B) An example of energy flow from one trophic level to another.
C) The result of coevolution.
D) All of the above are true.

13) In what phase of the water cycle does rain fall?A) Evaporation
B) Freezing
C) Collection
D) Precipitation

14) In the rock cycle, which kind of rocks are made from rocks that undergo heat and pressure?A) Igneous rocks
B) Metamorphic rocks
C) Minerals
D) Sedimentary rocks

15) Under the surface of the Earth, hot molten rock rises, cools, then sinks. This process is called
A) Diffusion
B) Condensation
C) Osmosis.
D) Convection

16) The state in which organisms maintain internal equilibrium is called
A) Osmosis
B) Homegeneity
C) Mitosis
D) Homeostasis

17) Which layer of the earth is the thinnest?
A) Mantle
B) Outer core
C) Crust
D) Inner core

18) What is the total number of bones in human body?
A) 206
B) 512
C) 196
D) 98

19) Which of the following has an organic origin?
A) Bakelite
B) Nylon
C) Coal
D) Sand

20) Which planet is known as the red planet?

A) Mars
B) Mercury
C) Jupiter
D) Earth

21) The presence or absence of a species across a landscape or region defines its
A) Dispersal
B) Range
C) Reproductive strategy
D) Survivorship
E) None of the above

22) What is the fate of a population that is dominated by younger individuals and
lacking in older individuals?
A) Growing
B) Declining
C) Becoming highly dynamic
D) Remain stable
E) Unpredictable

23) In atom bomb explosion, _______ energy is primarily converted into _______
energy.

A) Atomic, sound
B) Atomic, heat
C) Chemical, atomic
D) Chemical, light

24) The property of plants to manufacture their food is known as

A) Autotrophism
B) Phototropism
C) Phototaxis
D) Photokinesis

25) _______ convert chemical energy to electrical energy.

A) Bulbs
B) Microwave ovens
C) Air conditioners
D) Battery cells

26) Which is not a scavenger?

A) Vulture
B) Hyaena
C) Camel
D) Crow
27) When coal is burnt, _______ energy is converted into light and heat.

A) Electric
B) Chemical
C) Atomic
28) Which of the following sources of renewable energy does not generate green house gases?

A) Wind
B) natural Gas
C) Coal
D) Biomass

29) The natural greenhouse effect is caused mainly by the
A) Direct trapping of solar radiation as it moves down through the atmosphere.
B) Trapping by the atmosphere of radiation re-emitted by the earth’s surface.
C) Inability of solar radiation to penetrate the atmosphere.
D) Increase in greenhouse gases due to human activity.


30) The scientist recommends that the shopping centre should be located more than
100 meters from the remnant vegetation. The scientist recommends that it is
necessary for the survival of the species. This recommendation is an example of
A) A Conservation Category.
B) The Precautionary Principle.
C) Population Viability Analysis.
D) An Environmental Impact Assessment.

31) From the bark of which tree is quinine obtained?

A) Redwood
B) Eucalyptus
C) Bunyan
D) Cinchona

32) What is quinine used for?
A) Curing Aids
B) Curing Typhoid
C) Curing Malaria
D) Removing pimples

33) Which organism is helpful in making the soil fertile?
A) Roundworm
B) Earthworm
C) Beetle
D) Ringworm

34) When water is boiled, it is converted into steam. This is an example of conversion
of _______ energy to mechanical energy.

A) Heat
B) Chemical
C) Light
D) Atomic

35) Which is not a herbivorous animal?
A) Cow
B) Monkey
C) Deer
D) Lion

36) Movement of organisms away from the sunlight is known as
A) Positive phototaxis
B) Photoperiodism
C) Negative phototaxis
D) Autotrophism

37) What gas keeps a rotten egg floating on water surface ?
A) Oxygen
B) Pturid
C) Carbon dioxide
D) carbon mono oxide

38) _______ is made from bamboo plants.

A) Paper
B) Silk
C) Jute
D) Rubber

39) Which is not a 'renewable' resource of energy?

A) Sun
B) Water
C) Wind
D) Petroleum

40) Filtering tap water through activated carbon removes

A) Dissolved calcium
B) Nitrates
C) Bad tastes, odours, and color
D) Viruses

41) If you were to take a lump of coal and squeeze for a long time at very high temperatures, you would end up with
A) Graphite
B) Volcanic glass
C) A smaller lump of coal
D) Diamond

42) ‘Global Human Development Reports’ are issued on annual basis by
A) UNEP
B) UNDP
C) WWF
D) IUCN

43) ‘Living Planet Reports’ are issued by

A) UNEP
B) UNDP
C) WWF
D) IUCN
44) The response of plants to light is known as

A) Phototropism
B) Chemotropism
C) Thigmotropism
D) Hydrotropism

45) In some regions the combination of acid rain and smog causes damage to forests that is worse than the impact of either acid rain or smog on its own. This is an example of A) Specificity.
B) Acute toxicity.
C) Chronic toxicity.
D) Synergistic action.

46) Nitrogen-fixing bacterium is named

A) Lactobacillus
B) Clostridium
C) Rhizobium
D) Salmonella

47) Interaction between organisms of different species so as to get benefit from each other is known as

A) Saprophytism
B) Symbiosis
C) Predation
D) Etiolation

48) Which is not true regarding parasites?

A) They are always beneficial to the other organism.
B) They live on or inside the other organism.
C) They derive their food from the organism on which they live.
D) Leech is a parasite.

49) Which is not a 'biotic part' of the ecosystem?
A) Plants
B) Insects
C) Bacteria
D) Water
50) Which is not a 'non-renewable source of energy?

A) Coal
B) Petrol
C) Wind
D) Soil
51) Which fungus is used in making bread?

A) Aspergillus
B) Yeast
C) Penicillium
D) Pleurotus

52) A fossil fuel is best described as
A) A flaammable solid or gas.
B) A fuel that contains carbon.
C) Fossilised rock that will burn in a power station.
D) A flammable substance formed from ancient biological material.

53) Saprophytes derive their food from dead organisms.

A) False
B) True

54) Silk fibre is produced by certain insects.

A) True
B) False

55) The Kyoto Protocol is an agreement that ultimately aims to reduce the
A) Amount of carbon dioxide emissions.
B) Energy efficiency of motor vehicles.
C) Use of renewable energy resources.
D) Number of coal-powered power stations.

56) Food energy is transferred from one organism to the other through food webs.
A) True
B) False
57) Mammals are homeothermic animals.

A) True
B) False
58) Man is an amphibian.

A) True
B) False

59) Very high concentration of carbon dioxide accelerates plant growth.

A) True
B) False

60) 'Lac' is a plant product.

A) True
B) False

61) Insecticides are best applied to fields of crops on days with low wind speeds and low temperatures. This is to account specifically for the insecticide’s

A) Airborne transport mechanism and solubility in water.
B) Airborne transport mechanism and high rate of evaporation.
C) Bioaccumulative potential and solubility in water.
D) Bioaccumulative potential and high rate of evaporation.

62) Statistical study of ‘population’ and related aspects is called

A) Demography
B) Sociology
C) Anthropology
D) Social Work

63) Urban population growth in Pakistan is mainly due to A) Migration from rural to urban space
B) High population growth rate
C) Both ‘A’ & ‘B’
D) None of the above

64) Which area has the greatest number of plant species? A) The conifer forests of Northern Europe
B) The Cameroon rainforest
C) The North American prairie

65) It is now believed that dinosaurs became extinct because of A) Viral diseases B) Hunting by early humans
C) A worldwide period of climatic cooling
D) A meteorite impact

66) PCBs (polychlorinated biphenyls) are a health risk to humans due to
bioaccumulation. Which one of the following properties contributes most to
bioaccumulation? A) High volatility
B) Solubility in water
C) Solubility in fatty tissues
D) Artificial manufacture by industry

67) A certain plant requires moisture, oxygen, carbon dioxide, light, and minerals in
order to survive. This statement shows that a living organism depends on
A) Biotic factors
B) Abiotic factors
C) Symbiotic relationships
D) Carnivore-herbivore relationships

68) All of Earth's water, land, and atmosphere within which life exists is known as
A) A population
B) A community
C) A biome
D) The biosphere

69) Most autotrophs store energy in the form of A) Starches
B) Carbon dioxide
C) Water
D) Nucleic acids

70) All the plants, animals, and protists living in a forest make up a
A) Population
B) Community
C) Species
D) Phylum

71) A rocky island appears as oceanic waters recede. Which of the following forms of Vegetation would probably appear first on the bare rocks?
A) Lichens
B) Weeds
C) Shrubs
D) Pioneer trees

72) Acute toxicity from a pollutant refers toA) Harmful effects due to the pollutant’s long-term persistence in the environment.
B) Harmful effects of a single dose of the pollutant.
C) The health effects of breathing the pollutant over a long period.
D) The length of time during which a person is exposed to the pollutant.

73) Chronic toxicity from a pollutant refers to A) Breathing in a large amount of the pollutant.
B) The harmful effects of repeated doses of the pollutant.
C) The immediate symptoms of breathing the pollutant.
D) The length of time a person is exposed to the pollutant.


74) The branch of ‘Economics’ that deals with the issues of growth, inflation, unemployment and policies related to these issues in general is called
A) Microeconomics
B) Macroeconomics
C) None of above

75) Which organisms are dependent upon other animals for food?

A) Producers
B) Herbivores
C) Scavengers
D) Primary consumers

76) Certain bacteria living in a human's large intestine help to produce vitamin K. This
relationship is an example of A) Animal parasitism
B) Plant parasitism
C) Commensalism
D) Mutualism

77) The spotted touch-me-not, a flowering plant, has seed pods that burst open when
touched and forcefully eject their seeds. Such an adaptation is favourable because itA) Aids in the dispersal of the species.
B) Attracts insects that aid in pollination.
C) Prevents germination within the seed pod.
D) Can cause genetic changes to occur.

78) Two nucleotide sequences found in two different species are almost exactly the same.
This suggests that these species
A) Are evolving into the same species
B) Contain identical DNA
C) May have similar evolutionary histories
D) Have the same number of mutations

79) The Platypus and the echidna are only mammals that
A) Lay eggs
B) Feed on Eucalyptus leaves
C) Can fly
D) Are abundant

80) Hot hyper arid desert zone in Sindh province is

A) Centre of the tharparkar desert
Whole of Tharparkar desert
Kirthar Range

81) The study of homologous structures in mature organisms provides evidence for the
evolutionary relationships among certain groups of organisms. Which field of study
includes this evidence of evolution?A) Comparative cytology
B) Biochemistry
C) Geology
D) Comparative anatomy

82) Which group of organisms is believed to be among the earliest to evolve on Earth?A) Arthropods
B) Coelenterates
C) Protozoans
D) Reptiles

83) According to the heterotroph hypothesis, the first life on Earth was able to
A) Synthesize its food from inorganic compounds
B) Feed upon carbohydrates produced by autotrophs
C) Feed upon available nutrients in the environment
D) Carry on photosynthesis instead of respiration


84) In Pakistan Sub-tropical moist pine forests exist in
A) Hills of Hazara, Kaghan, Chitral, sawat, Parachinar
Murree and hazara Hills
Rawalpindi and Hazara Hills
Ziarat and Zhob


85) Mendel did most of his original experimentation using this type of plantA) Tomato Plants
B) Pea Plants
C) Eucalyptus
D) Egg Plant

86) The decomposition of rock and particles through processes where no movement is
involved is called
A) Weathering
Erosion
Natural Degradation
Rock transformation

87) In what layer of the earth’s atmosphere does most of our weather occur?
A) Mesosphere
B) Lithosphere
C) Troposphere
D) Stratosphere

88) _______is the personal consumption expenditures, the gross private investment, the government consumption expenditures, the net income from assets abroad (net income receipts), and the gross exports of goods and services, after deducting two components: the gross imports of goods and services, and the indirect business taxes.
A) Gross National Income
Gini Index
Gross Domestic Product
GDP Index

89) A composite index measuring deprivations in the three basic dimensions- a long and healthy life, knowledge and a decent standard of living is calledA) Human Development Index
Human Poverty Index
Human life expectancy and Education Index
Human development Perception Index

90) The amount by which the consumption exceeds the available Ecological Resources is

A) Overshoot
Biological deficit
Ecological Footprint
Ecological Deficit

91) A rate of exchange that accounts for price differences across countries, allowing
international comparisons of real output and incomes is calledA) Purchasing power parity
Purchasing potential
Purchasing force
Purchasing & affordability

92) Human demand on earth resources compared to Planet earth’s ecological regeneration capacity is called

A) Biocapacity
Ecological Foot print
Shrink & share
Consumption pressure

93) What is the mineral that has tricked so many people into thinking it was the real precious metal gold that its common name is “fool’s gold”?
A) Aluminium
Silver
Iron pyrite
Nickel

94) Most of the ozone in the Earth’s atmosphere is present in
which layer?A) Mesosphere
B) Stratosphere
C) Lithosphere
D) Troposphere

95) Which colour light is least important to a green plant during photosynthetic activities?A) Green
B) Yellow
C) BLUE
D) orange

96) In living plants, when does respiration occur?A) Only during digestion
B) Only in the daytime
C) Only in total darkness
D) All the time

97) Introduced or exotic species

A) Often fail to colonize the new area.
B) May become common enough to become pests.
C) Can disrupt the balance of the natural species with which they become associated.
D) B and C only
E) A, B, and C are all correct.

98) Stars appear to have different colours because they have differentA) Distances
B) Ages
C) Temperatures
D) Names

99) Most animal eukaryotic cells have
A) A cell wall, nucleus, and cytoplasm
B) A plasma membrane, nucleus, and cytoplasm
C) A cell wall, nucleus, and nucleolus
D) A cell wall, nucleus, and mitochondrion

100) When the moon appears through the night as a thin crescent, the suns lightA) Is being blocked by the earth
B) Still illuminates about half the surface of the moon
C) Is only hitting the crescent region
D) Only shines during the day

very nice contribution

__________________
main is karam k kahan tha qabil..Huzoor SAW ki bnda prwari hai

some of them i would like to confirm!!!!

1.man is not an amphibion
2.darwin proposed artificial selection
3.scavenger kya hota hai??
4.lion is carnivorous
5.precipitation is the process of raining
6.diamond will be produced as per 41 is concerned.
7. 9th main D
rest of them will be solved after thorough study.................thanks for posting

corrections are welcome

__________________
GEO to aise k sab tumhara ha,MARO to aisa jaise tmhara kuch bhi nhi.

Maza deti han zindagi ki thokerin unko,jinhen NAAM-E-KHUDA le kar sanbhal janey ki adat ho.

11) C. Hypothesis
24) I think Answer should be ‘None of above’ because this property is called photosynthesis.
31) D. Cinchona

__________________
Best end of life is not knowledge but action.
Don't limit yourself to what you think people are expecting!

Q6 answer is like some other culture the person who like this own culture is known as ethnocentrism

2.A Darwin
4.C Abiotic substances
6.B Observation bcoz You looked at something and noticed it. That's the first step of the method!
10.A A theory bcoz A theory is an explanation backed by observations. Note that a scientific theory is rather different, and is explained as being facts established over time, which is different than the situation described in the question.
11.C Hypothesis bcoz Unlike a theory, a hypothesis is not backed up by observations. It is often thought of as a 'scientific guess'. Once this guess has been backed up by observations, it can be called a theory.
15.D Convection bcoz movement of heat by actual motion.
24.A Autotrophism
31.D Cinchona
40.C Btaste, odours and color.
43.C WWF
56.A True Bcoz The interlinking of several food chains constitutes food webs.
57.A True Bcoz Homeothermic organisms like mammals and birds are capable of maintaining a constant body temperature despite changes in atmospheric temperature.
60.A False bcoz Lac is a semisolid substance secreted by 'lac insects