Question # 1

Genetic basis of ABO blood group system was explained by:

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Landsteiner

Levine

Bernstein

Carl Correns

The living organism which can prepare their own food are:

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predators

parasites

producers

prey

Non-neural cells which encapsule the axon of neurons are

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Microglial

Microbodies

Schwann cells

Companion cells

The principal stages of this cycle are

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Ammonification

Nitrification

Assimilation

All of above

Animals involved in the construction of corals are

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Polyps

Medusae

Gonozooids

None

Most of the vectors for spreading important human diseases belong to:

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Radiata

Acoelomates

Pseudocoelomates

Coelomates

Which of the following is not true about biotic components

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Producers

Consumers

Decomposers

Atmosphere

Food chain is an example of

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Predation

Mode of nutrition

Trophic levels of food

All of these

The root nodules bacteria fix ______ in sil air:

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Parasitism

Carbon dioxide

Nitrogen

Hydrogen

Consumers are the all the organisms, primarily animals. They obtain energy directly or indirectly from

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Producers

Consumers

Decomposers

All of the above

About ______% of solar energy is used to evaporate water, heat up soil and then lost to the outer space

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95

97

98

99

Lichens are dual organisms composed of symbiotic association of algae living within a fungus:

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Mycelium

Sporangium

Hyphae

Rhizophore

HIV attaches on cell membrane of T cell at _____ receptor site

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Cd2

Cd4

Cd8

Gp120

A group of animals with distinct germinal layers in adult stage are grouped in

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Cnidaria

Arthropoda

Aschelminthes

Platyhelminthes

Mycorrhiza is an association of

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Algae with roots of higher plants

Bryophytes with roots of higher plants

Fungi with roots of higher plants

Bacteria with roots of higher plants

Highest degree of regeneration is present in sponges because of

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Undifferentiated cells

Simplest organization

Ability to reproduce

Absence of germ layers

Pick the odd one

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Cellulose

Galactose

Agar

Pectin

Biotic components includes all the

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Nonliving components

Living components

Nonliving and living both

None of these

One poles the average temperature is:

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At freezing point

Below freezing point

Above freezing point

More then 5∘C

F. Sanger was the first scientist who determined the ___ structure of a protein molecule

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Primary

Secondary

Tertiary

Quaternary

What is the probability of having albino child if father and mother both are carrier(Aa)

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25%

30%

50%

75%

Which are pioneers of terrestrial ecosystem

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Dermatocarpons

Parmelia

Polytrichum

None of these

Essay on "Principles of geology" was published by

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Wallace

Malthus

Lyell

Cuvier

Succession begins by a few hardy invaders called:

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Founders

Initiators

Pioneers

Leaders

Which of the following is not an enzyme of HIV

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Reverse transcriptase

Integerase

Protease

Ligase

Basically, all animals depend on plants for their:

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Living

Food

Life

Respiration

Which of the following is correct about insulin

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Inhibit glycogen hydrolysis

Increase protein synthesis

Increase glycolysis

All

The only phylum included in Grade Radiata is:

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Porifera

Aschelminthes

Platyhelminthes

Cnidaria

Flavin adenine dinucleotide is a

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Prosthetic group

Activator

Coenzyme

Inhibitor

The sucessions started on water is called as

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Hydrosere

Xerosere

Derosere

None of the above

Predation decreases by decreasing the prey due to

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Decrease in food

Decrease in water

Decrease in consumers

All of these

Two parents of blood group A had a child of blood group O, what will be percentage chances of having such child again

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25%

50%

75%

None

The term niche in ecolgy was first proposed by:

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Charles Eton

Ernst Haeckel

Joseph Grinnell

Carolus Linnaeus

Layer of earth where life is present is called

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Hydrosphere

Lithosphere

Biosphere

Topography

Topography is study of?

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Population

Individula

Earth

birds

Sahara Desert i found in :

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Europe

America

Africa

Australia

Which part of amino acid give its physical and chemical properties

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Amino group

Carboxylic group

Alpha carbon

Alkyl group

The animal that is caught and eaten is the

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Predator

Prey

Consumer

Both a and c

Crustose refers to:

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Aquatic lifeless structure

Aquatic lively structure

Land lively structure

Land lifeless structure

The ecosystem present on land or soil is called

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Terrestrial ecosystem

Lithospheric ecosystem

A and B

None

Which of these stages appears as a pioneer during succession on barren land?

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Foliage lichens

Mosses

Crustose lichens

Fruiticose lichens

______ 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

Tape worm is the example of

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Endoparasite

Ectoparasite

Outer parasite

All of above

All of the following are present in mitochondria, EXCEPT

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Cristae

Ribosomes

DNA

Thylakoids

Nutrients required by organism in large amount like water, carbon, hydrogen, oxygen, nitrogen, phosphorus, sulphur and calcium are:

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Macronutrients

Micronutrients

Mega Nutrients

Both a & c

Which can't increase their weight in inorganic medium

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Producer

Consumer

Decomposer

Both b & c

Which level of protein structure is responsible for maintenance of helix shape of an enzyme

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Primary

Secondary

Tertiary

Quaternary

Substances cross the cell membrane more easily when they are

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water soluble

protein soluble

alcohol soluble

lipid soluble

Puffiness of hands is the character of

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Graves disease

Addinsons disease

Myxedema

Cretinism

Man has ____________ linkage group

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23

21

25

46

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

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Ribosome

Cytoplasm

Cell membrane

Nuclear membrane

What will be the risk of heamophilia in sons if father is haemophilic and mother is normal

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0%

20%

25%

50%

Which rule depicts its correct statement regarding temperature variation?

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Allen's Rule:

Birds and mammals have greater size in cold region

Bergman's Rule:

The tail snout and ears are smaller in colder region.

Jordan's Rule:

Birds in cold regions are with narrow wings.

All are false.

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

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Nitrification

Denitrification

Ammonification

Deamination

All living organisms supported by biosphere are called

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Biotic components

Abiotic components

Autecology

Synecology

Cells recycle their dead parts with the help of

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Centrioles

Vacuoles

Lysosomes

Golgi apparatus

Lichen is the example of

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Mutualism

Commenaslim

Parasitism

All of above

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

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Secondary succession

Primary succession

Succession

Climax period

The particles which do not contain any nucleic acid are

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Viruses

Prions

Viroids

All

F1 particles contain enzyme complex for:

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Protein synthesis

ATP synthesis

DNA replication

Respiration

In tertiary structure, presence of hydrophilic amino acids at the surface of proteins and hydrophobic amino acids buried inside, indicate

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Nature of bonding

Function of protein

Nature of medium

Shape of protein

The correct sequence in a food chain is

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Mice - green plants - snake - hawke

Green plants - mice - snake - hawk

Mice - snake - green plants - hawk

Green plants - hawk - snake - mice

The succession started on bare area is called as

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Primary succession

Secondary succession

Tertiary succession

Quartnary succession

Pseudo-autosomal genes are present on

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X-chromosome

Y-chromosome

Both a & b

Autosomes

Function of succinic dehydrogenase is aided by

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Metal ion

Vitamin

NAD

FAD

Ventral root of the spinal nerve contains

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Sensory nerve fibres

Motor nerve fibres

Mixed nerve fibres

All

Pre-chordates is another name used for

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Echinoderms

Protochordates

Cephalochordates

Hemichordates

The persistent symptoms of small pox are

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Raised fluid filled vesicles

The pocks

Pustules

Vascular lesions

Man is

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Primary consumers

Secondary consumers

Tertiary consumers

All of above

In hydrospheric ecosystem the exchange material and transfer of energy takes place.

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Within water and air

Within water and land

Within water

Within land and air

Succinic acid differs from malonic acid by

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OH

CH₂

CH₃

CHO

Endocytosis of an apoptotic body is termed as

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Pinocytosis

Exocytosis

Phagocytosis

Apoptosis

There is an association between two organisms, which brings benefits to both the organisms

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Predation

Symbiosis

Parasitism

None of above

Succulent plants are

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Xerophytes

Mesophytes

Hydrophytes

None of above

The most common animal of phylum Aschelminthes is:

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Enterobuis vermicularis

Ascaris lumbricoides

Ancylostoma duodenale

Rhabditis

Soil nitrogen resources are also strengthened by the addition of ______ by the man himself

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Nitrogen fertilizers

Nitrogen

Fertilizers

None of above

Primary consumers form ______ trophic level

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First

Second

Third

Forth

Over grazing may lead to:

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Tundra

Taiga

Grassland

Desert

In temperature deciduous forest the range of temperature is form:

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0∘C - 30∘C

4∘C - 30∘C

4∘C - 25∘C

4∘C - 40∘C

Charles Eton defined the niche as the species:

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Work

Employment

Job

Occupation

Most of the plant cells lack following organelles EXCEPT

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Flagellum

Lysosome

Centriole

Mitochondria