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Biodiversity and conservation

What parameters are used for Tiger Census in our country’s National parks and Tiger reserves
A. Pug marks only
B. Pug marks and fecal pellets
C. Fecal pellets only
D. Actual head counts

B. Pug marks and fecal pellets

Biotechnology Principles and Processes

In EcoRI, the Roman number indicates
A. Genus
B. Species
C. Strain no
D. The order of the enzyme isolated

D. The order of the enzyme isolated

Biotechnology and Its Applications

Bt in the Bt cotton represents
A. Biotechnology
B. Bacillus thuringiensis
C. Bacterial toxoid
D. Bio transformer

B. Bacillus thuringiensis

Biotechnology and Its Applications

In agarose gel electrophoresis DNA molecules are separated on the basis of their
A. Charge only
B. Size only
C. Charge to size ratio
D. Both charge and size

D. Both charge and size

Biotechnology and its Applications

To introduce alien DNA to plant cell suitable method is.
A. Micro injection
B. Biolistics
C. Disarmed pathogen
D. Transformation

B. Biolistics

Biotechnology and its Applications

The DNA polymerase enzyme used in PCR technology is obtained from
A. E. coli
B. Agrobacterium tumefaciens
C. Thermus aquaticus
D. Salmonella typhi

C. Thermus aquaticus

Biotechnology and its Applications

SCID disease is caused by deficiency of enzyme
A. Adenosine transaninase
B. Adenosine deaminase
C. Guanosine transaminase
D. Guanasine deaminase

B. Adenosine deaminase

Biotechnology and its Applications

Bt-Cotton is an example of a transgenic crop. In this 'Bt' refers to:
A. Bacillus tuberculosis
B. Biotechnology
C. Bacillus thuringiensis
D. Bordetella thuringiensis

A. Bacillus tuberculosis

Biotechnology: Principles and Processes

The Taq polymerase enzymes is obtained from
A. Bacillus subtilis
B. Thermus aquaticus
C. Pscudomonas putida
D. Thiobacillus ferroxidans

B. Thermus aquaticus

Biotechnology: Principles and Processes

Stain used in Agarose gel electrophoresis
A. Acetocarmine
B. Saffranin
C. Cyanogen bromide
D. Ethidium bromide

D. Ethidium bromide

Ecosystem

According to Robert Constanza and his colleagues. The cost of ecosystem service, like soil formation accounts for about
A. 10%
B. 50%
C. 6%
D. None of them

B. 50%

Ecosystem

Select the correct sequence of steps in the process of decomposition
A. Fragmentation → Leaching → Catabolism → Humification → Mineralisation
B. Leaching → Catabolism → Humification → Mineralisation → Fragmentation
C. Catabolism → Humification → Mineralisation → Fragmentation → Leaching
D. Humification → Mineralisation → Fragmentation → Leaching → Catabolism

A. Fragmentation → Leaching → Catabolism → Humification → Mineralisation

Ecosystem

The process of breakdown of detritus by detritivores is
A. Mineralisation
B. Fragmentation
C. Leaching
D. Humification

B. Fragmentation

Ecosystem

The breakdown of detritus into smaller particles by Earthworm is a process called.
A. Catabolism
B. Mineralization
C. Fragmentation
D. Humification

C. Fragmentation

Ecosystem

Pyramid of energy is
A. Always inverted
B. Always uprighted
C. Spindle shaped
D. Both uprighted and inverted depending uponecosystem

B. Always uprighted

Ecosystem

Climax community is in a state of
A. Non equilibrium
B. Equilibrium
C. Disorder
D. Constant change

B. Equilibrium

Ecosystem

Which organism are not given any place in ecological pyramid
A. Herbivore
B. Producers
C. Saprophytes
D. Carnivore

C. Saprophytes

Ecosystem

The amount of nutrients in the soil such as carbon, nitrogen phosphorus, calcium etc, present in the soil at any given time is referred to as:
A. Standing state
B. Standing crop
C. Biomass
D. Succession

A. Standing state

Ecosystem

The process of breakdown of complex organic matter into inorganic substances is
A. Mineralisation
B. Catabolism
C. Decomposition
D. Leaching

B. Catabolism

Ecosystem

Reservoir of phosphorus cycle.
A. Earth's crust
B. Water
C. Atmosphere
D. Living organisms

A. Earth's crust

Ecosystem

The percentage of photosynthetically active radiation (PAR) in the incident solar radiation
A. 100%
B. 50%
C. 1.5%
D. 2.10%

B. 50%

Ecosystem

An inverted pyramid of biomass can be found in which ecosystem
A. Forest
B. Marine
C. grassland
D. Tundra

B. Marine

Ecosystem

Which is correct sequence in the food chain ?
A. Grass → wolf → deer → Buffalo
B. Bacteria → Grass → Rabbit → Buffalo →
C. Grass → Insect → Bird → Snake
D. Grass → Snake → Insect → Deer

C. Grass → Insect → Bird → Snake

Ecosystem

Example for primary consumer
A. Goat
B. Frog
C. Snake
D. Snail

A. Goat

Environmental Issues

BOD of wastewater is estimated by measuring the amount of
A. Total organic matter
B. Biodegradable organic matter
C. Oxygen evolution
D. Oxygen consumption

A. Total organic matter

Environmental Issues

Which one of the following plant is known as "Terror of Bengal"
A. Bryophyllum
B. Nymphea
C. Parthenium
D. Eichhornia

D. Eichhornia

Evolution

Viable seeds of Phoenix dactylifera discovered during archeological excavation at King Herod's palace near the dead sea is.
A. 2000 years old
B. 200 years old
C. 10,000 years old
D. 1000 years old

A. 2000 years old

Evolution

Darwin's finches are a good example of :
A. Industrial melanism
B. Adaptive radiation
C. Connecting link
D. Convergent evolution

B. Adaptive radiation

Evolution

Analogous organs arise due to
A. Convergent evolution
B. Natural selection
C. Divergent evolution
D. Genetic drift

A. Convergent evolution

Evolution

Fossil evidences of evolution is called
A. Anatomy
B. Embryology
C. Morphology
D. Palentology

D. Palentology

Evolution

The annual net primary productivity of whole biosphere is approximately
A. 55 billion tons
B. 115 billion tons
C. 150 billion tons
D. 170 billion tons

D. 170 billion tons

Evolution

Paleontological evidences of evolution refer to the
A. Development of embryo
B. Homologous organs
C. Fossils
D. Analogous organs

C. Fossils

Evolution

Which prehistoric man started to use hides to protect their body and buried their dead bodies?
A. Neanderthal man
B. Homo sapiens man
C. Homohabilis man
D. Homo erectus man

A. Neanderthal man

Evolution

Brain capacity of Homo habilis is
A. 1400cc
B. 1000cc
C. 650-800cc
D. 900cc

C. 650-800cc

Human Health and Disease

The production of antibodies in response to the antigens is by
A. B-lymphocytes
B. T-lymphocytes
C. Monocytes
D. Phagocytes

A. B-lymphocytes

Human Health and Disease

Widal test is conducted for detection of
A. Cancer
B. Pneumonia
C. Malaria
D. Typhoid

D. Typhoid

Human Health and Disease

Opiods are obtained from :
A. Erythroxylum coca
B. Papaver somniferum
C. Cannabis sativa
D. Datura

B. Papaver somniferum

Human Health and Diseases

The substance which causes a definite change in genes is called
A. Toxin
B. Alkaloid
C. Cytotoxin
D. Mutagen

D. Mutagen

Human Health and Diseases

The disease chikungunya is transmitted by
A. Housefly
B. Aedes mosquitoes
C. Cockroach
D. Female Anopheles

B. Aedes mosquitoes

Human Health and Diseases

Which of the following is a pair of viral diseases
A. Ringworm, AIDS
B. Amoebic dysentery, Common cold
C. Common cold, AIDS
D. Typhoid, Pneumonia

C. Common cold, AIDS

Human Health and Diseases

Which of the following is the
only sexually transmitted disease
A. Pneumonia
B. Haemophilia
C. Malaria
D. Gonorrhea

D. Gonorrohea

Human Health and Diseases

The type of antibody produced during an allergic response:
A. IgA
B. IgE
C. IgG
D. IgM

B. IgE

Human Health and Diseases

The disease caused by a protozoan parasite is
A. Ascariasis
B. Filariasis
C. Amoebiasis
D. Ringworms

C. Amoebiasis

Human Reproduction

Number of spermatozoa produced from a single Primary spermatocyte in spermatogenesis is
A. One
B. Two
C. Three
D. Four

D. Four

Human Reproduction

Corpus luteum produces
A. Estrogen
B. Testosterone
C. Progesterone
D. None

C. Progesterone

Human Reproduction

Spermiation is the process of the release of sperm from
A. Seminiferous tubules
B. Vas deferens
C. Epididymis
D. Prostate gland

A. Seminiferous tubules

Human Reproduction

Which one of the following is not male accessory gland?
A. Seminal vesicle
B. Prostate
C. Bulbourethral gland
D. Epididymis

D. Epididymis

Human Reproduction

The layer of uterine wall that contracts during parturition:
A. Endometrium
B. Myometrium
C. Perimetrium
D. Epimetrium

B. Myometrium

Human Reproduction

Sperms are produced in
A. Vas deferens
B. Prostate gland
C. Interstitial cells
D. Seminiferous tubules

D. Seminiferous tubules

Human Reproduction

In which part of human female reproductive system fertilization take place
A. Ovary
B. Uterus
C. Ampullary isthmus region
D. Cervix

C. Ampullary isthmus region

Human Reproduction

Human chorionic gonadotropin is produced by
A. Ovary
B. Follicle
C. Placenta
D. Liver

C. Placenta

Human Reproduction

Embryo’s heart s developed during
A. Fourth trimester
B. Third trimester
C. Second trimester
D. First trimester

D. First trimester

Human Reproduction

The wider part of the oviduct is called
A. Ampulla
B. Isthmus
C. Fimbriae
D. Infundibulum

A. Ampulla

Human Reproduction

Which of the following hormone helps in Parturition.
A. Progesterone
B. estrogen
C. thyroxine
D. Oxytocin

D. Oxytocin

Microbes in Human Welfare

The bacteria present in the rumen of the cattle and it helps in break down of cellulose
A. Methano bacterium
B. Cyano bacter
C. Azato bacter
D. Rhizobium bacteria

A. Methano bacterium

Microbes in Human Welfare

Biofertilisers are organisms that enrich the nutrient quality of the soil. Main source of biofertilizers is
A. Methanabacterium
B. Bacillus thuringiensis
C. Azotobactor
D. Aspergillus niger

C. Azotobactor

Microbes in Human Welfare

Large holes in Swiss cheese are formed due to production of a large amount of co2 by
A. Propionobacterium sharmonii
B. Mycobacterium
C. Saccharormyces
D. Penicillium

A. Propionobacterium sharmonii

Microbes in Human Welfare

A typical example for mycorrhiza forming fungus is :
A. Penicillium
B. Glomus
C. Aspergillus
D. Trichoderma

B. Glomus

Microbes in Human Welfare

Aspergillus niger belongs to
A. Bacteria
B. Fungi
C. Viruses
D. Algae

B. Fungi

Microbes in Human Welfare

A bacterium that is used in the industrial production of acetic acid
A. Aspergillus niger
B. Clostridium butylicum
C. Acetobacter aceti
D. Lactobacillus

C. Acetobacter aceti

Microbes in Human Welfare

Which one of the following microorganisms is used for the production of citric acid in industries?
A. Lactobacillus bulgaricus
B. Penicillium curriculum
C. Aspergillus niger
D. Rhizopus nigricana

C. Aspergillus niger

Microbes in Human Welfare

Statins are produced by the yeast.
A. Monascus purpureus
B. Saccharomyces cerevisiae
C. Trichoderma polysporum
D. Aspergillus niger

A. Monascus purpureus

Molecular Basis of Inheritance

Information transfer from RNA to DNA is called
A. Replication
B. Translation
C. Transcription
D. Reverse transcription

D. Reverse transcription

Molecular Basis of Inheritance

The adapter molecule is :
A. m-RNA
B. r-RNA
C. t-RNA
D. hn-RNA

C. t-RNA

Molecular Basis of Inheritance

In a DNA strand the nucleotides are linked together by
A. Glycosidic bond
B. Phosphodiester bond
C. Peptide bond
D. Hydrogen bond

B. Phosphodiester bond

Molecular Basis of Inheritance

Clover leaf model of tRNA is
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure

B. Secondary structure

Molecular Basis of Inheritance

A nucleoside differs from a nucleotide, where it lacks the
A. Nitrogen base
B. Pentose sugar
C. Phosphate group
D. Hydroxyl group

C. Phosphate group

Molecular Basis of Inheritance

In DNA replication, discontinuously synthesized DNA fragments are later joined by
A. DNA polymerase
B. DNA ligase
C. DNA Gyrase
D. DNA

B. DNA ligase

Organisms and Population

In the equation dN/dt=rN, the letter 'r' denotes
A. Intrinsic rate of natural increase
B. Carrying capacity
C. Population density
D. Respiration losses

A. Intrinsic rate of natural increase

Organisms and Population

The process in which the reproductive fitness of one species is significantly lower in the presence of another species is
A. Predation
B. Competition
C. Parasitism
D. Mutualism

B. Competition

Organisms and Population

Cuckoo lays its eggs in the nest of crow is an example of :
A. Mutualism
B. Brood parasitism
C. Commensalism
D. Predation

B. Brood parasitism

Organisms and Populations

Presence of a special photosynthetic pathway (CAM) is seen in
A. Cactus
B. Banyan
C. Rose
D. Banana

A. Cactus

Organisms and Populations

The population interaction in which one species get benefit and other one is neither benefitted nor harmed
A. Mutualism
B. Commensalism
C. Amensalism
D. Parasitism

B. Commensalism

Organisms and Populations

According to Allen's rule the mammals from colder climate have
A. Longer ears and shorter limbs
B. Shorter ears and shorter limbs
C. Shorter ears and longer limbs
D. Longer ears and longer limbs

B. Shorter ears and shorter limbs

Organisms and Populations

Animal that can tolerate wide range of Salinity are called
A. Euryhaline
B. Stenohaline
C. Anadromus
D. Catadromus

A. Euryhaline

Organisms and Populations

To avoid summer related problems like heat and desiccation some snails and fishes go into
A. Hibernation
B. Diapause
C. Aestivation
D. Dormancy

B. Diapause

Organisms and Populations

Brood parasitism is seen in
A. Birds
B. Human
C. Reptiles
D. Fishes

A. Birds

Organisms and Populations

Example for Mutualism is
A. Wasp and Fig plant
B. Orchid and Mango plant
C. Tortoise and goat
D. Ticks and dog

A. Wasp and Fig plant

Organisms and Populations

Under unfavourable conditions many Zooplanktons species in lakes known to enter a suspended development stage is called
A. Aestivation
B. Diapause
C. Heibernation
D. Sporulation

B. Diapause

Organisms and Populations

Pseudocopulation (Sexual deceit) is found in
A. Amorphophallus
B. Ophry’s orchid
C. Fig
D. Rafflatia

B. Ophry’s orchid

Organisms and Populations

The formula of exponential population growth curve is
A. dN/dt = rN
B. dt/dN = rN
C. dN/rN = dt
D. rN/dN =dt

A. dN/dt = rN

Organisms and Populations

Natality refers to
A. Death Rate
B. Birth Rate
C. Number of individuals leaving the habitat
D. Number of individuals entering a habitat

B. Birth Rate

Organisms and Populations

An orchid growing as an epiphyte on a mango branch is an example of :
A. Mutualism
B. Commensalism
C. Parasitism
D. Amensalism

B. Commensalism

Principles of Inheritance and Variation

ZZ-ZW type of sex determination is seen in
A. Platypus
B. Snail
C. Cockroach
D. Peacock

D. Peacock

Principles of Inheritance and Variation

Identify the sex-linked recessive disorder in which clotting of blood is affected.
A. Haemophilia
B. Colour blindness
C. Cystic fibrosis
D. Sickle cell anaemia

A. Haemophilia

Principles of Inheritance and Variation

44A + XXY chromosome compliment occurs in
A. Down syndrome
B. Turner syndrome
C. Klinefelter's syndrome
D. Bleeders syndrome

C. Klinefelter's syndrome

Principles of Inheritance and Variation

Which of the following organism does not show parthenogenesis.
A. Turkey bird
B. Honeybee
C. Rotifers
D. Hydra

D. Hydra

Principles of Inheritance and Variation

Female heterogamety is observed in
A. Birds
B. Fruit fly
C. Grass hopper
D. Honey bee

A. Birds

Principles of Inheritance and Variation

Identify the sex-linked recessive genetic disorder among the following
A. Phenylketonuria
B. Sickle cell anaemia
C. Colour blindness
D. Thalassemia

C. Colour blindness

Principles of Inheritance and Variation

Genotypic and Phenotypic ratio is same incomplete dominance is
A. 3 : 1
B. 9 : 3 : 3 : 1
C. 1 : 2 : 1
D. 1 : 1

C. 1 : 2 : 1

Principles of Inheritance and Variation

Person having Genotype IAIB would show the blood group as AB. This is because of
Q.
A. Pleiotropy
B. Co-dominance
C. Segregation
D. Incomplete dominance

B. Co-dominance

Principles of Inheritance and Variation

Which of the following blood group is an example for co-dominance.
A. A-Blood group
B. B-Blood group
C. AB-Blood group
D. O-Blood group

C. AB-Blood group

Principles of Inheritance and Variation

The Klinefelter’s syndrome has chromosomal constituent
A. 44A+X0
B. 45A+XY
C. 44A+XXY
D. None of them

C. 44A+XXY

Principles of Inheritance and Variation

The family pedigree of Queen Victoria shows a number of descendants for which of genetical disease
A. Haemophilia
B. Thalassemia
C. Sicklecell anemia
D. Phenyl Ketonusia

A. Haemophilia

Principles of Inheritance and Variation

In Mendel's dihybrid experiment, the phenotypic ratio was
A. 9 (round green) : 3 round yellow: 3 [wrinkled yellow]: 1 wrinkled green
B. 9 (round yellow): 3 round green : 3 [wrinkled yellow]: 1 wrinkled green
C. 9 (round yellow): 3 (round green): 3 [round yellow]: 1 wrinkled green
D. 9 (wrinkled green) : 3 (round yellow): 3 wrinkled yellow: 1 round green

B. 9 (round yellow): 3 round green : 3 [wrinkled yellow]: 1 wrinkled green

Principles of Inheritance and Variation

Phenotypic ratio for dihybrid cross is :
A. 1 : 2 : 1
B. 1 : 1
C. 3 : 1
D. 9 : 3 : 3 : 1

D. 9 : 3 : 3 : 1

Principles of Inheritance and Variations

A person with the sex chromosome XXY suffers from:
A. Down's syndrome
B. Turner's syndrome
C. Gynadromorphism
D. Klinefelter's syndrome

D. Klinefelter's syndrome

Principles of Inheritance and Variations

It is a phenomenon in which a gene exists in more than two allelic forms of a character:
A. Multiple allelism
B. Pleiotropy
C. Inheritance
D. Dominance

A. Multiple allelism

Principles of Inheritance and Variations

The inheritance of a trait generally controlled by three or more genes is
A. Pleiotropy
B. Codominance
C. Multiple allelism
D. Polygenic inheritance

D. Polygenic inheritance

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