Multiple Choice Questions in Science: October 2013

Monday, October 28, 2013

Chapter 15 : REPRODUCTION IN ORGANISMS

Choose Appropriate Alternative

Asexual reproduction is...

[A] a fusion of specialized cells 
[B] a method by which all types of organisms reproduce
[C] a method producing genetically identical off-springs
[D] a method involving more than one parent

Which of the following organisms does not reproduce by binary fission?
```
[A] Amoeba [B] Plasmodium [C] Euglena [D] Paramoecium
```

Reproduction is essential for living organisms in order to...

[A] keep the individual organism alive
[B] fulfill their energy requirement 
[C] maintain growth 
[D] continue the species forever

A multicellular organism which reproduces by budding is...
```
[A] Amoeba [B] Yeast [C] Paramoecium [D] Hydra
```
A simple multicellular animal having tantacles and lives in fresh water reproduces by asexual method of...
```
[A] binary fission [B] spore formation [C] budding [D] fragmentation
```
In which of the following organisms does spore formation take place?
```
[A] Mucor [B] Planaria [C] Spirogyra [D] Potato
```

The method of asexual reproduction in spirogyra is...

[A] division of a cell into two cells 
[B] breaking of filaments into smaller bits
[C] division of a cell into many cells
[D] formation of a large number of buds

An alga which reproduces by asexual method called fragmentation is...
```
[A] rhizopus [B] salmonella [C] plasmodium [D] spirogyra
```
The cut part of a plant stem (having roots and is fixed to the ground) used in the process of grafting is...
```
[A] stock [B] scion [C] cutting [D] bud
```
In asexual reproduction, two off-springs having the same genetic material and same body features are called...
```
[A] callus [B] twins [C] clones [D] chromosomes
```
______ is the simplest method of asexual reproduction in unicellular organisms.
```
[A] Binary fission [B] Budding [C] Fragmentation [D] Spore formation
```
The protective layer formed by some unicellular organisms during adverse condition is called...
```
[A] bud [B] scion [C] cyst [D] graft
```

Hydra can reproduce by...

[A] budding                       [B] regeneration
[C] both budding and regeneration [D] multiple fission

Rhizopus reproduces by...

[A] binary fission [B] budding [C] fragmentation [D] sporulation

Cutting is used to grow a new plant of...
```
[A] rose [B] lemon [C] mango [D] potato
```
Which of the following methods is used for vegetative propagation of plants having seeds with long dormancy or poor germination capacity?
```
[A] Cutting [B] Budding [C] Layering [D] Grafting
```
In human cells, there are ______ chromosomes.
```
[A] 23 [B] 32 [C] 46 [D] 64
```

The male organ in a flowering plant is...

[A] Carpel [B] Stamen [C] Pollen tube [D] Seed

The female organ in a flowering plant is...

[A] Carpel [B] Stamen [C] Pollen tube [D] Seed

In humans, the fertilization of ovum by a sperm takes place in...
```
[A] testis [B] ovary [C] oviduct [D] uterus
```
In humans, the embryo gets nutrition from mother's blood through...
```
[A] ovary [B] oviduct [C] amnion [D] placenta
```
Menstruation in human female lasts for ______ days.
```
[A] 2-3 [B] 3-5 [C] 14 [D] 28-30
```
The menstrual cycle in human female is repeated about every ______ days.
```
[A] 14 [B] 21 [C] 28 [D] 270
```

What does 'S' stand for in AIDS?

[A] System [B] Syndrome [C] Symptom [D] Synapse

The immune system becomes weak in a person suffering from...
```
[A] Syphillis [B] Gonorrhoea [C] AIDS [D] Typhoid
```

Which of the following shows budding?

[A] Yeast [B] Amoeba [C] Paramoecium [D] Plasmodium

Which of the following reproduces by multiple fission?
```
[A] Hydra [B] Yeast [C] Spirogyra [D] Plasmodium
```

Regeneration is observed in...

[A] amoeba [B] planaria [C] spirogyra [D] yeast

Which of the following is not produced in ovary?

[A] Ovum [B] Estrogen [C] Progesterone [D] Testosterone

What is formed after fertilization?

[A] A sperm [B] An ovum [C] A zygote [D] A gamete

Which of the following plants shows vegetative propagation?
```
[A] Wheat [B] Jute [C] Sunflower [D] Bryophyllum
```

Testes in human male are located in...

[A] abdominal cavity [B] vas deferens [C] scrotum [D] penis

In the process of sexual reproduction...

[A] only male is necessary
[B] only female is necessary
[C] both male and female are necessary
[D] either a male or a female is necessary

The process of release of an egg from the ovary is called...

[A] reproduction [B] ovulation [C] menstruation [D] fertilization

Stoppage of sexual cycle permanently in a female is called...
```
[A] menopause [B] menstruation [C] ovulation [D] lactation
```
The method by which desired characters of two plants can be combined is...
```
[A] cutting [B] layering [C] budding [D] grafting
```

The disease caused by Treponema Palidium is...

[A] AIDS [B] Syphillis [C] Gonorrhoea [D] Hepatitis

Vegetative propagation is observed in...

[A] potato [B] yeast [C] hydra [D] mucor

The stage at which there is a gradual change in structure of reproductive organs of human male and female is called...
```
[A]spermatogenesis [B] oogenesis [C] menarche [D] puberty
```

The temperature in the scrotum is about ______ than the body temperature.

[A] 2-3 °C lower [B] 2-3 °C higher [C] 5-6 °C lower [D] 5-6 °C higher

The sexual cycle in human female starts at______.

[A] birth [B] the age of 45 [C] at the age of 28 [D] puberty stage

The sexual cycle in human female remains active (functional), generally up to the age of...
```
[A] 30 years [B] 40 years [C] 50 years [D] 60 years
```

_______ fertilizes an ovum in a female's body.

[A] Blood [B] Testosterone [C] Sperm [D] Seminal fluid

Which of the following is a chemical device for birth control?
```
[A] Copper-T [B] Birth-control pills [C] Condom [D] Loop
```
Which of the following is a surgical method of contraception for women?
```
[A]  Copper-T [B] Loop [C] Tubectomy [D] Vasectomy
```
By which process is the continuity of life of various species maintained?
```
[A] Digestion [B] Reproduction [C] Respiration [D] Contraception
```

Through what are the hereditary characters inherited?

[A] Golgi complex [B] Ribosomes [C] Chromosomes [D] Mitochondria

By which simple method asexual reproduction takes place in unicellular organisms like protozoa and bacteria?
```
[A] Fragmentation [B] Regeneration [C] Fission [D] Budding
```
When one cell divides to produce many cells, then the division is known as...
```
[A] fission [B] binary fission [C] multiple fission [D] fragmentation
```

In which organisms does reproduction take place through binary fission?

[A] Hydra, Planaria [B] Hydra, Amoeba [C] Amoeba, Paramoecium [D] Mucor, Yeast

Which structure changes first during binary fission?

[A] Nucleus [B] Nuclear membrane [C] Cytoplasm [D] Cell membrane

Which organisms reproduce through fragmentation?

[A] Volvox, Sea anemone[B] Spirogyra, Sea anemone
[C] Amoeba, Sea anemone [D] Paramoecium, Sea anemone

Which of the following are asexual modes of reproduction in multicellular organisms?

[A] Regeneration, Budding [B]Binary fission, Regeneration 
[C] Regeneration, Fission [D] Multiple fission, Budding

The vegetative propagation method used between a lemon plant and an orange plant is known as...
```
[A] cutting [B] layering [C] budding [D] grafting
```
How many chromosomes are present in the gamate of human male?
```
[A] 23 [B] 46 [C] 22 [D] 1
```
The flower having both male and female reproductive organs is called...
```
[A] sexual [B] asexual [C] bisexual [D] monosexual 
```
In flowering plants, the fertilized egg cell develops into ______ within ovule.
```
[A] seed [B] fruit [C] flower [D] embryo
```
Girls normally attain puberty at the age of _____ years.
```
[A] 10 [B] 12 [C] 14 [D] 16
```
Boys generally attain puberty at the age of _____ years.
```
[A] 10 [B] 12 [C] 14 [D] 16
```

The main reproductive organ in human male is...

[A] penis [B] vas deferans [C] scrotum [D] testis

The main reproductive organ in human female is...
```
[A] ovary [B] oviduct [C] uterus [D] ovum
```
The growing embryo (foetus) obtains nutrition from mother's body from...
```
[A] Placenta [B] amnion [C] amniotic fluid [D] heart
```

ANSWERS

(1) C (2) B (3) D (4) D (5) C (6) A (7) B (8) D (9) A (10) C (11) A (12) C (13) C (14) D (15) A (16) D (17) C (18) B (19) A (20) C (21) D (22) B (23) C (24) B (25) C (26) A (27) D (28) B (29) D (30) C (31) D (32) C (33) C (34) B (35) A (36) D (37) B (38) A (39) D (40) A (41) D (42) C (43) C (44) B (45) C (46) B (47) C (48) C (49) C (50) C (51) A (52) B (53) A (54) D (55) A (56) C (57) D (58) B (59) C (60) D (61) A (62) A (63) (64) (65) (66) (67) (68) (69) (70)

Wednesday, October 23, 2013

Chapter 16 : HEREDITY AND EVOLUTION

Choose Appropriate Alternative

The occurrence of differences among the individuals of same species is due to _____.
```
[A] transition [B] variation [C] development [D] evolution
```
The continuity of features from one generation to another is known as ______.
```
[A] evolution [B] mutation [C] heredity [D] generation
```

On which of the following plant species had Mendel worked?

[A] Zea Mays [B] Pisum Sativum [C] Cassia Tora [D] Phaseolus Mungo

When Mendel crossed Tall plant with Dwarf plant, what was the proportion of Dwarf plant in F₂ generation?
```
[A] 75% [B] 25% [C] 60% [D] 40%
```

In human beings, sex is determined by ______

[A] cell [B] tissues [C] genes [D] organelles

The human species has genetic roots in ______.

[A] India [B] America [C] Africa [D] Australia

The organs which perform different functions but have the same basic structure are known as ______.
```
[A] homologous organs [B] analogous organs 
[C] homolytic organs [D] analytic organs
```

If the fossil of an organism is found in the deeper layers of earth, then we can predict that...

[A] the extinction of organism has occurred recently.
[B] the extinction of organism has occurred thousands of years ago.
[C] the fossil position in the layers of earth is not related to its time of extinction. 
[D] time of extinction cannot be determined.

New species may be formed if :
1. DNA undergoes significant changes in germ cells.
2. there is no change in the genetic material.
3. mating does not take place.
```
[A] (i) and (ii) [B] (i) and (iii) [C] (ii) and (iii) [D] (i),(ii) and (iii)
```
The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor?
```
[A] Homologous organs [B] Excretory organs 
[C] Analogous organs [D] Reproductive organs
```

Which pair of the following is not homologous?

[A] forelimbs in humans & lizard [B] forelimbs of lizard & frog 
[C] wings of butterfly & bat [D] wings of bat & bird

_______ is the science of heredity and evolution.

[A] Reproduction [B] Genetics [C] Physiology [D] Anatomy

Which of the following is a true statement?

[A] DNA is a segment of a gene.
[B] A gene is a molecule made up of many DNA units.
[C] The gene is a unit of heredity.
[D] Each DNA has one specific gene on it.

Which of the following is true?

[A] X-chromosome and Y-chromosome have same size.
[B] X-chromosome is smaller in size than  the Y-chromosome.
[C] Y-chromosome is smaller in size than  the X-chromosome.
[D] All three of (A), (B) and (C) are possible.

Which of the following is not an acquired trait?

[A] Ability to speak a particular language. 
[B] Cut tail of a mouse 
[C] Ability of a man to swim
[D] Ability to reproduce

Speciation means...

[A] development of a new species from existing one
[B] mixing of species
[C] sustenance of a species forever 
[D] end to the existence of a species

The age of a fossil can be determined by...

[A] Carbon Dating Technique [B] geographical conditions 
[C] Mass spectrography     [D] colour of fossil

First of all the eye was formed in...

[A] paramoecium [B] euglena [C] octopus [D] planaria

Birds are very closely related to...

[A] fish [B] reptiles [C] insects [D] planaria

Wild cabbage is the ancestor for ______ by artificial selection.
```
[A] broccoli [B] cauliflower [C] kohlrabi [D] all three
```
The cells in human female have chromosomes of the type______.
```
[A] 22 + X [B] 22 + Y [C] 44 + XX [D] 44 + XY
```
The cells in human male have chromosomes of the type ______.
```
[A] 22 + X [B] 22 + Y [C] 44 + XX [D] 44 + XY
```
The ovum produced by a human female has chromosomes of the type ______.
```
[A] 22 + X [B] 22 + Y [C] 44 + XX [D] 44 + XY
```
If the sperm having _____ chromosome fertilizes an ovum, then the zygote develops in to ______.
```
[A] X, male [B] Y, female [C] X, female [D] XY, female
```
If characters of T are expressed in F₁ generation by Tt, then T is said to be...
```
[A] recessive gene [B] dominant gene [C] alternate gene [D] only gene
```
What type of plant is developed if crossing is made between plant having TT and plant having tt genes?
```
[A] Tall and dwarf plants [B] All tall plants [C] All dwarf plants [D] None of these
```
What is the ratio of monohybrid cross in F₂ generation?
```
[A] 11 : 3 [B] 3 : 2 [C] 2 : 1 [D] 3 : 1
```
What percentage is possessed by tall plants in monohybrid experiment?
```
[A] 100% [B] 75% [C] 50% [D] 25%
```
What can be the genetic composition for yellow colour and round seeds?
```
[A] YYRR [B] YYrr [C] yyRR [D] yyrr
```
The genes for green colour and wrinkled seeds are...
```
[A] YYRR [B] YYrr [C] yyRR [D] yyrr
```
The genes for yellow colour and wrinkled seeds are ...
```
[A] YYRR [B] YYrr [C] yyRR [D] yyrr
```
The genes for green colour and round seeds are...
```
[A] YYRR [B] YYrr [C] yyRR [D] yyrr
```

The ratio for dihybrid cross experiments is...

[A] 13:1:1:3 [B] 11:1:1:3 [C] 3:1:1:11 [D] 9:3:3:1

Which isotope of carbon is used to determine the age of fossils?
```
[A] ¹¹C [B] ¹²C [C] ¹³C [D] ¹⁴C
```

Which is the oldest variety of cabbage by evolution?

[A] Cabbage [B] Wild cabbage [C] Cauliflower [D] Kale

What is formed if evolution of only leaves takes place in wild cabbage?
```
[A] Cabbage [B] Wild cabbage [C] Kale [D] Kohlrabi
```
If flower development in wild cabbage is arrested and made sterile, it develops into...
```
[A] cabbage [B] wild cabbage [C] cauliflower [D] Kale
```

What is meant by F₁ generation?

[A] Parent generation [B] First progeny [C] Second Progeny [D] None of these

The father and the mother both show the presence of black eyes. In their children two girls were having black eyes but one girl was having a brown eye.What could be the genes in both parents' gametes? In this case black eye is dominant(B) over brown eye(b).
```
[A] Father-BB, mother-bb [B] Father-bb, mother-BB 
[C] Father-Bb, mother-Bb [D] Father-bb, mother-bb
```
In F-2 generation of plants, _____% plants were dwarf and _____% plants were tall in Mendel's experiment.
```
[A] 50%, 50% [B] 25%, 75% [C] 75%, 25% [D] 100%, 0%
```
Certain farmers selected the swollen portion of wild cabbage and developed a new variety called...
```
[A] cauliflower [B] kohlrabi [C] kale [D] broccoli
```
```
[A][B][C][D]
```

ANSWERS

(1) B (2) C (3) B (4) B (5) C (6) C (7) A (8) B (9) B (10) C (11) C (12) B (13) C (14) C (15) D (16) A (17) A (18) D (19) B (20) D (21) C (22) D (23) A (24) C (25) B (26) A (27) D (28) B (29) A (30) D (31) B (32) C (33) D (34) D (35) B (36) A (37) C (38) B (39) D (40) B (41) B

Chapter 17 : OUR ENVIRONMENT

Choose Appropriate Alternative

Which of the following is an example of biodegradable waste?
```
[A] Vegetables [B] Glass [C] Plastic [D] Metal
```
Which of the following is an example of non-biodegradable waste?
```
[A] Fruits [B] Vegetables [C] Paper [D] Polythene
```

Ecosystem is an interactive system made up of...

[A] organisms and their physical surrounding 
[B] producers and consumers 
[C] producers and their physical surroundings 
[D] consumers and their physical surroundings

The structural and functional unit of the environment is known as...
```
[A] food chain [B] food web [C] ecosystem [D] none of them
```

First order consumers are...

[A] carnivores [B] herbivores [C] decomposers [D] omnivores

Omnivorous organisms consume...

[A] only plants              [B] only animals 
[C] plants and animals both [D] microorganisms

Edaphic factors are included in...

[A] abiotic components [B] biotic components 
[C] producers         [D] consumers

How many molecules of ozone can be decomposed by one atom of chlorine?
```
[A] 10000 [B] 100000 [C] 1000000 [D] 1000
```
The most important compound which accounts for 80% of total depletion of ozone layer is...
```
[A] chloride ion [B] sulphur ion 
[C] chloroflurocarbons [D] magnesium ion
```

Which of the following is not an abiotic component?

[A] Micro-organisms [B] Temperature [C] Water [D] Soil

Which of the following is an edaphic component?

[A] Temperature [B] Humidity [C] Light [D] Soil structure

The flow of energy in an ecosystem is...

[A] reversible [B] cyclic [C] unidirectional [D] erratic

Ozone layer is located in _____ of atmosphere.

[A] troposphere [B] stratosphere [C] ionosphere [D] mesosphere

Which rays strike in large amount on earth due to depletion of ozone layer?
```
[A] Ultraviolet [B] Infra-red [C] Visible [D] Microwaves
```
All organisms and their physical surroundings with which they interact are collectively called...
```
[A] environment [B] atmosphere [C] hydrosphere [D] lithosphere
```

In which two major forms can the wastes be classified?

[A] Gas and fluids [B] Gas and liquids [C] Fluids and solids [D] Solids and liquids

The waste materials which can be decomposed by biological processes are called...

[A] biodegradable [B] non-biodegradable [C] bio-nondegradable [D] organic substances

The interacting system formed by association of biotic community and physical environment is called...
```
[A] ecosystem [B] biome [C] biosphere [D] food web
```

Which biotic components form the first trophic level?

[A] Producers [B] Herbivores [C] Carnivores [D] Decomposers

On the basis of nutrition, producers are...

[A] heterotrophic [B] parasitic [C] autotrophic [D] saprophytic

What is the mode of nutrition in consumers?

[A] Autotrophic [B] Heterotrophic [C] Holozoic [D] Parasitic

The organisms which utilize plants and animals as food are called...
```
[A] herbivores [B] carnivores [C] omnivores [D] saprophytes
```
The organisms which convert complex organic components of dead bodies into simple organic molecules are called...
```
[A] micro-organisms [B] decomposers [C] transformers [D] converters
```
The organisms which convert simple organic compounds into simple inorganic compounds are called...
```
[A] micro-organisms [B] decomposers [C] transformers [D] converters
```

Into which two categories can the abiotic components of an ecosystem be divided?

[A] Climatic and edaphic [B] Aquatic and edaphic 
[C] Climatic and aquatic [D] Terrestrial and aquatic

The first link of a grazing food chain is formed by...

[A] producers [B] consumers [C] decomposers [D] transformers

A detritus food chain starts with...

[A] producers [B] herbivores [C] decomposers [D] carnivores

The network formed by interlinking food chains is called...

[A] food link [B] food web [C] ecosystem [D] trophic system

Which radiations are prevented by ozone layer from reaching the Earth?
```
[A] X-rays [B] Infra-red [C] Ultraviolet [D] Micro-waves
```
Which reaction plays an important role in breaking of oxygen molecule into oxygen atoms before ozone formation in upper atmosphere?
```
[A] Photosynthesis [B] Photolysis [C] Photo-emission [D] Photoformation
```

What is the wavelength of ultraviolet rays?

[A] 310-200 A° [B] 310-200 nm [C] 310-525 A° [D] 310-525 nm

The depletion of ozone layer was first observed in ______ region.
```
[A] tropical [B] sub-tropical [C] North polar [D] South polar
```
The CFC used in refrigerators and air-conditioners is...
```
[A] radon [B] freon [C] chloron [D] zedon 
```

ANSWERS

(1) A (2) D (3) A (4) C (5) B (6) C (7) A (8) B (9) C (10) A (11) D (12) C (13) B (14) A (15) A (16) D (17) A (18) A (19) A (20) C (21) B (22) C (23) B (24) C (25) A (26) A (27) C (28) B (29) C (30) B (31) B (32) D (33) B (34) (35) (36) (37) (38) (39) (40)

Sunday, October 20, 2013

Chapter 18 : MANAGEMENT OF NATURAL RESOURCES

Choose appropriate alternative for each question.

To reduce the use of LPG by making use of solar energy is an example of...
```
[A] recycle [B] reduce [C] reuse [D] none of them
```
How much area (in sq km) is under the forest cover in our country (India)?
```
[A] 758330 [B] 768436 [C] 750093 [D] 749832 
```
In Gujarat, how much area is covered by forests?
```
[A] 9.32% [B] 9.86% [C] 9.69% [D] 9.99%
```
In which year did Amritadevi Bishnoi sacrifice her life for the protection of khejri trees?
```
[A] 1713 [B] 1731 [C] 1813 [D] 1831
```

The names of endangered plant species are published in

[A] Green Data Book    [B] Red Data Book 
[C] Endangered Species Book [D] Yellow Data Book

How many National Parks are there in Gujarat?
```
[A] 5 [B] 4 [C] 21 [D] 24
```

Which of the following dams is in Gujarat?

[A] Narmada dam   [B] Sardar dam 
[C] Sardar Sarovar dam [D] Tapi River dam

Which of the following is considered as liquid gold?
```
[A] Kerosene [B] Diesel [C] Petroleum [D] Fuel oil
```

The three R's for saving the environment are...

[A] reduce, Recycle, Repeat [B] Reduce, Recycle, Reuse
[C] Reduce, Reuse, Reform [D] Recycle, Reform, Reuse

Which of the following cannot be recycled?
```
[A] Plastic [B] Paper [C] LPG [D] Metals
```
How much area (in sq km) is covered by forests in Gujarat?
```
[A] 19899 [B] 18999 [C] 20999 [D] 19999
```
In India, the law for the protection of wildlife was framed in the year...
```
[A] 1970 [B] 1971 [C] 1972 [D] 1973
```
How many National Parks are there in India?
```
[A] 78 [B] 80 [C] 84 [D] 88
```
How many Wildlife sanctuaries are there in India?
```
[A] 144 [B] 241 [C] 412 [D] 441
```
How many Wildlife sanctuaries are there in Gujarat?
```
[A] 4 [B] 21 [C] 88 [D] 30
```

Tendu leaves are used for making...

[A] bidis [B] baskets [C] hut roofs [D] paper

What kind of development/s has/have increased our demand of energy?

[A] Cultural development [B] Agricultural development 
[C] Technological development [D] All three developments

The development of luxurious life and materials for comfort lead to the destruction of...
```
[A] human [B] animals [C] natural resources [D] life
```
What will be created if the indiscriminate and rampant use of natural resources will continue?
```
[A] Balance [B] Imbalance [C] Equilibrium [D] Pollution
```
Used articles of materials like paper, glass, metals and plastic are heated and used to make new articles after proper processing. This is known as...
```
[A] Cycling [B] Recycling [C] Rebinding [D] Reproduction
```
If there is a decrease in the use of LPG due to increased use of solar energy, it is an example of...
```
[A] recycling [B] reduction [C] reuse [D] none of the given
```
How much area of total land in India is covered by forests?
```
[A] 23.38% [B] 23.83% [C] 28.33% [D] 32.83% 
```

Which activity leads to local and global climatic change?

[A] Tree plantation [B] Fire [C]  Erosion [D] Deforestation

What is the effect of deforestation on amount of CO₂ in atmosphere?

[A] It increases        [B] It decreases 
[C] It remains unchanged [D] Cannot be predicted

What is the result of increase in global temperature?

[A]  Good climate [B] Greenhouse effect 
[C] Deforestation [D] Ice formation

Obtaining the forest products by afforestation in open land, reserve areas, on the sides of railway tracts and along the road sides is called...
```
[A] complex forestry [B] agro forestry [C] social forestry [D] forestation
```
Which community of Rajasthan have religious belief for conservation of forest and wildlife?
```
[A] Bishnoi [B] Mina [C] Rajput [D] Vaishnav
```
How many people sacrificed their lives along with Amritadevi in 1731 for the protection of Khejri trees?
```
[A] 365 [B] 364 [C] 363 [D] 362
```
What is the term used for the animals which are not domestic and plants which are not produced by agriculture?
```
[A] Special organisms [B] Micro-organisms [C] Roaming animals [D] Wildlife
```
Plant and animal species which are on the threshold of getting destroyed or becoming extinct are known as...
```
[A] extinct species [B] threatened species [C] endangered species [D] vulnerable species
```
The area in which the wildlife is allowed to survive without the interference of human activities is called...
```
[A] sanctuary [B] National park [C] protected zone [D] wildlife zone
```
The area in which the wildlife is protected but many necessary human activities are also allowed is called...
```
[A] sanctuary [B] National park [C] protected zone [D] wildlife zone
```
Which movement was carried out for the conservation of forests and environment?
```
[A] Garhwal movement [B] Tehri Andolan [C] Forest movement [D] Chipko Andolan
```
Which of the following is/are source for drinking water?
```
[A] Rain [B] River [C] Ground water [D] All three
```

What does deforestation on large scale reduce?

[A] Rainfall [B] Soil erosion [C] Global warming [D] Atmospheric CO₂

```
[A][B][C][D]
```

ANSWERS

(1) B (2) B (3) C (4) B (5) B (6) B (7) C (8) C (9) B (10) C (11) B (12) C (13) D (14) D (15) B (16) A (17) D (18) C (19) B (20) B (21) B (22) A (23) D (24) A (25) B (26) C (27) A (28) C (29) D (30) C (31) B (32) A (33) D (34) D (35) A (36) (37) (38) (39) (40)

Multiple Choice Questions in Science

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Monday, October 28, 2013

Chapter 15 : REPRODUCTION IN ORGANISMS

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Wednesday, October 23, 2013

Chapter 16 : HEREDITY AND EVOLUTION

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Chapter 17 : OUR ENVIRONMENT

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Chapter 18 : MANAGEMENT OF NATURAL RESOURCES

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