Question # 1

Example of a virus having tadpole shape consisted of head and tail

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Bacteriophage

Polio virus

HIV

HV

Animals involved in the construction of corals are

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Polyps

Medusae

Gonozooids

None

If the distance of 20 map units is found among two linked loci what would be the percentage of cross gametes

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40%

60%

20%

10%

Ribozyme is found in

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Mitochondria

Cytoplasm

Lysosomes

Ribosomes

Actual place or location where an organism lives is called us:

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Niche

Terrain

Habitat

Domain

Both organisms benefit from the ______ relationship

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Mutualism

Commensalism

Parasitism

All of above

Mad cow infection is caused by ____

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Viroid

Virion

Prion

Bacteria

Succinic acid differs from malonic acid by

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OH

CH₂

CH₃

CHO

When bacteria break down nitrates and release nitrogen back into atmosphere this process is called:

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Nitrification

Denitrification

Ammonification

Deamination

Diabetes insipidus is caused by

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Lack of aldosterone

Overproduction of ADH

Lack of ADH

Lack of insulin

The living organisms, which cannot prepare their own food but obtain ready-made food form others, are:

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primary and secondary consumers

secondary and tertiaryconsumers

only primary consumers

consumers

Endangered plant species have been recorded to more than:

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600

400

500

300

Lices and mosquitoes are the examples of

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Endoparasite

Ectoparasite

Outer parasite

All of above

Eagle may eat blue bird, but blue bird eats insects like caterpillar and caterpillar feeds on grass or green leaves. This is a ______

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Food chain

Food web

Both A and B

None of above

Which are pioneers of terrestrial ecosystem

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Dermatocarpons

Parmelia

Polytrichum

None of these

A change in one or more bases of DNA, which results in the formation of an abnormal protein is

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Moulting

Transformation

Mutation

Fission

An association between certain fungi and the roots of plants growing in acid soil is:

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Lichens

Predation

Mycorrhiza

Commensalism

Point mutation occurs in

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Sickle cell anemia

Phenylketonuria

Alkaptonuria

All

Allele for whiteness in Drosophila is :

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Recessive

Codominant

Dominant

Partially Dominant

Dandruff is caused by

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Algae

Bacteria

Fungi

Virus

Grasslands of tropic climate have woody trees and are called:

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Alpine

Boreal

Biome

Savanna

Essay on "Principles of geology" was published by

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Wallace

Malthus

Lyell

Cuvier

Major cells infected by HIV are

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Monocytes

B lymphocytes

T lymphocytes

RBC

Which one of the following does not refer to mutialism

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Mycorrhiza

Parasitism

Lichen

Bacteria in the gut of cow

We can strengthen the soil nitrogen resources by adding:

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Liquid nitrogen to soil

Ammonia gas to soil

Nitrogen fertilizers to soil

Nitrogen fixing bacteria to soil

In earthworm, the surface responsible for the gaseous exchange is

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Skin

Gills

Body surface

Trachea

Which of the following things were not collected by Darwin?

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Specimens of diverse faunas and floras of south America

South American fossils

13 types of finches

Turtles

Many cold=blooded animals remain inactive during winter season; it is called:

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Hibernation

Condensation

Morphosis

Proto-operation

The study of the relationship of animals to environment is called:

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Biology

Ecology

Microbiology

Zoology

Crystallization of viruses was done by _____ for the first time

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Ivanowsky

Twort

Stanley

Robert Koch

After digestion, decomposers releases

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Various organic substances from organic matter

Nitrates, phosphates, and calcium

Citric acid, tartaric acid and oxlic acid

All of these

Which of the following traits is not sex-linked recessive ?

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haemophilia

colour blindness

hypophosphatemic ricket

tfm syndrome

Darwin collected 13 types of birds of :

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Robins

Sparrows

Kingfishers

Finches

A common animal of temperate deciduous forests is the:

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Kangaroo

Cat

Leopard

Rhesus Monkey

--------------- begins forged from bare rocks, sand for where no previous life was found

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Secondary succession

Primary succession

Succession

Climax period

Layer of earth where life is present is called

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Hydrosphere

Lithosphere

Biosphere

Topography

In case of symbiosis ___________ is benefited.

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Host

Parasite

Both host and parasite

None of these

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

Which of the following statement is wrong?

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Fungi have mitochondria

Mitochondria have DNA and ribosomes

Mitochondrial ribosomes resemble more to eukaryotic ribosomes

Mitochondria are self-replicating organelles

The neuron which has central and peripheral branches is

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Sensory neuron

Motor neuron

Associative neuron

Relay neuron

Taj Mahal's marble has been affected by

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CFC's

Lead pollution

Acid rain

None

___ gives blue color with iodine

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Glycogen

Dextrin

Cellulose

Starches

Glycerol, fatty acids and phosphoric acid give rise to:

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Phospholipid

Phosphatidic acid

Phosphatidyl choline

Phosphatidylethnoline

First invertebrate to develop a nervous system is

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Sponges

Cnidarians

Flat worms

Round worms

Green plants are ______ trophic level

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First

Second

Third

Forth

Primary consumers form ______ trophic level

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First

Second

Third

Forth

The symbiotic relationship in which both the partners get benefit is:

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Parasitism

Commensalism

Predation

Mutualism

High calcium concentration in blood causes the stimulation of

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Parathormone

Calcitonin

T₃

T₄

Which eat consumers

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Predators

Carnivores

Omnivores

All

Isosahedral viruses usually have ___

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10 faces

20 faces

15 faces

5 faces

The two linked genes A and B with a 30% recombination frequency must be

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15 units apart

30 units apart

60 units apart

90 units apart

Homogenetistic acid is oxidized rapidly when exposed to air, turning the urine

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White

Purple

Blue

Black

Formation of ES complex activates the______ site of an enzyme

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Active

Binding

Catalytic

Allosteric

Interaction of two loci

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Pleiotropy

Epistasis

Dominance

Differentiation

The dominance relations of a 4 O'clock plant can be described in terms of

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Complete dominance

Incomplete dominance

Partial dominance

Both B and C

A blue cone monochormate

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Can perceivetwo colours

Can't perceiveany colour

Can perceive only blue colour

Can perceive only red colour

A relationship that harms one of the partners is called

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Parasitism

Symbiosis

Commensalism

None

Which of the following is not a homopolysccharide?

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Starch

Chitin

Pectin

Glycogen

Glyosidic bond is formed by the

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Removal of Oxygen

Addition of Water

Addition of Oxygen

Removal of Water

What is done to monkeys by HIV

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Multiplication and disease

Infection and multiplication

Infection and disease

None

Annual rainfall in grassland is about:

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250 to 650 mm

250 to 850 mm

250 to 450 mm

250 to 750 mm

Pick up the correct sequence of path followed by a testosterone molecule till its export

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SER>RER>Transport vesicle>Golgi apparatus>secretory vesicle>cell membrane

SER>Golgi apparatus>Transport vesicle> secretory vesicle>cell membrane

SER>RER>Golgi apparatus> Transport vesicle>secretory vesicle>cell membrane

SER>Transport vesicle>Golgi apparatus>secretory vesicle>cell membrane

Tick the biotic (intra-specific) factors:

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Wave action, humidity, light

Colonization,aggregation,parental care

Neutralism,mutualism,predation

Mineral elements, mutualism,parasitism

Some ______ years ago human population and conversion of land to agricultural production began

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10,000

40,000

5000

None

Color blindness, haemophilia and gout form linkage group onj

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Chromosome 9

Chromosome 19

x-chromosome

y-chromosome

Heterotrophic organisms are basically:

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Producers

Consumers

Producer and consumers

None of these

Enzymes present in human body generally have

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Same optimum temperature and optimum pH

Same optimum temperature but different optimum pH

Same optimum pH but different optimum temperature

Different optimum temperature and optimum pH

Which of the following features is not shared by prokaryotic and eukaryotic cells

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Ribosome

Cytoplasm

Cell membrane

Nuclear membrane

Common housefly is involved in spread of all diseases except

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Hepatitis

Malaria

Dysentery

Cholera

The change in frequency of alleles at a locus that occurs by chance is called :

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genetic drift

genetic change

gene mutation

gene frequency

The study of different communities to environment is called

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Autecology

Synecology

Microbiology

Ornithology

Newly synthesized Large proteins are digested into small viral proteins by

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Host protease

Viral protease

Viral RT

Host pepsin

Which of the following acts as template strand for reverse transcription

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Viral DNA

Viral RNA

Host DNA

Host RNA

Most unifying characteristics of all types of cells is

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Cell membrane

Nucleus

Ribosomes

S.E.R

Osteoporosis is caused by lack of

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ADH

Melanin

Estrogen

STH

Darwin published " The Origin of Species" in

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1840

1844

1858

1859

In littoral zone, the zooplanktons are:

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Protozoan and coelenterates

Protozoan and porifers

Protozoan and flatworms

Protozoan and crustacean

Which of the following is always an intracellular parasite

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Zooparasite

Viral parasite

Phyto parasite

Microbial parasite

______ is a change in the community structure of an ecosystem over a period of time

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Succession

Primary succession

Secondary succession

None of above

When Fructose form ring structure, It is

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6 Cornered

5 cornered

4 cornered

3 cornered