Question # 1

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

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Progression

Sequence

Succession

String

Predator-prey relationship has a significant influence on:

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Distribution of organisms

Abundance of organisms

Both a & b

Non-availability of organisms

Overgrazing

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Promotes salinity

Promotes erosion

Promotes grasses

Inhibits dicot competitors

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%

Bacterial and fungi are mainly included in the group of

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Consumers

Decomposers

Producers

None of these

What is done to monkeys by HIV

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Multiplication and disease

Infection and multiplication

Infection and disease

None

Darwin collected 13 types of birds of :

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Robins

Sparrows

Kingfishers

Finches

Melanin pigment is produced under the hormone

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ADH

MSH

STH

TSH

The organelle that protect the cell from invading organisms is

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Centriole

Lysosome

Mitochondrion

Vacuole

Diseases in living organisms which are caused by parasites are called

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Infestations

Infection

Fusion

All of above

It has duality in its functioning

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Pituitary gland

Pancreas

Gonads

Gut

Traffic of substance between nucleoplasm and cytoplasm is controlled by

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Nuclear Envelope

Nuclear membrane

Nuclear pores

Endoplasmic reticulum

Consumers are ______ organisms

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Autotrophic

Heterotrophic

Decomposers

None of above

There are ________ total possible genotypes of blood group ABO system

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3

4

6

7

Puffiness of hands is the character of

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Graves disease

Addinsons disease

Myxedema

Cretinism

Common housefly is involved in spread of all diseases except

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Hepatitis

Malaria

Dysentery

Cholera

Parasites which live inside the host body is called:

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Ectoparasite

Endoparasite

Intestinal parasite

Muscular parasite

One mechanism of temperature regulation was developed by land plans and animals by developing.

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Brak and skin

Vascular tissues and circulatory system

Cambium and excretory system

Vascular tissue and respiratory system

Which type of nucleic acid is found in the capsid of HIV

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RNA

DNA

ssDNA

None

Which of the following cross is carried to check the genotype of an individual showing a dominant phenotype

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Check cross

Test Cross

Criss cross

Self cross

All chromosomes other than sex chromosomes are called

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Linked Chromosomes

Autosomes

Autophagosommes

Dictyosomes

Limnetic phytoplanktons include:

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Mossses

Algea

Bacteria

Cyanobacteria

How many nitrogen atoms are found in lecithin

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1

2

3

4

Each biome consists of a combination of plants and animals in the fully developed

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Climax community

Community

Population

None of above

A short food chain of two or three links supports a community:

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Efficiently

More efficiently

Inefficiently

Less efficiently

According to Darwin descent with modification means

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Same ancestor

Same characters

Different ancestors

Different characters

Benefits brings about by both of the organisms is called

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Mutualism

Symbiosis

Anabolism

catabolism

The parasite that live outside the body of the host is called as

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Endoparasite

Ectoparasite

Outer parasite

All of above

Ozone is present at about ________ km above earth

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5 -10

10 - 20

10 - 40

10 - 50

Polytrichum is a

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Lichen

Algae

Liver worts

Moss

Which of the following is a living character of virus

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Formation of Crystals

Production of new viral particles

Coordination

Metabolism

RNA and Proteins are components of

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Chromosomes

Receptors

Secretions

Ribosome

It is an animal, but it does not have nerve or muscle tissue. It is neither diploblastic nor triploblastic. It is probably a

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Flatworm

Nematode

Cnidarian

Sponge

An animal that preys other animals is a

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Predator

Carnivore

Consumer

All

The root nodules bacteria fix ______ in sil air:

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Parasitism

Carbon dioxide

Nitrogen

Hydrogen

The lake ecosystem can be divided into ______ number of zones:

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Two

Three

Four

Five

This is not the part of neuron

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Axon

Dendron

Nissl’ granules

Synapse

Which of the following is not a homopolysccharide?

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Starch

Chitin

Pectin

Glycogen

The chances of which hemophilia is equal in males & females

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A

B

C

All

An association between two organisms, which brings benefit to both the organisms is called:

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Parasitism

Commensalisms

Predation

Symbiosis

Viruses containing RNA rather than DNA are called

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Riboviruses

Bacteriophages

Rotaviruses

Retroviruses

If you are studying the structure of HIV , you will observe spikes associated with the

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Core

Capsid

Envelope

Genome

The gill pouches present in embryos of mammals :

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support that ontogeny recapitulates phylogeny

homologous structures

used by embryos to breathe

evidence for the degeneration

Succession starting in pond is called

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Hydrosere

Xerosere

Pioneers

None of these

The hormone which is not secreted by anterior lobe of pituitary is

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GH

ICSH

Prolactin

TRF

Grazers feed mainly on which kind of plants

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Tree leaves

Shrubs

Grasses

Cereals

Which one of the following is site of oxidative Phosphorylation in mitochondria

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Cristae

Outer membrane

Matric

Ribosome

Biosphere is spread over the surface of plant earth, extending upto:

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8 to 10 km

5 to 6 km

10 to 20 km

8 to 16 km

Xerosere starts with __________ stage.

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Crustose lichen

Foliose lichen

Mass

Shrub

The establishment of woody plants that inhibits the growth of most plants other than mosses in succession is known as

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Climax stage

Shrub stage

Tree stage

All of these

Which one of following structures is formed from mesoderm?

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Intestinal lining

Muscles

Skin

Brain

Nucleus is visible when the cell is in ____ stage

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Non-dividing

Dividing

active

Both a and b

Tiny shaped structure located deep between cerebral hemispheres

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Thyroid gland

Pitutary gland

Pineal Gland

Corpus callosum

Normal fruit flies have

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White eyes

Bright red eyes

Light red eyes

Black eyes

Gene pool consists of all alleles at all gene loci in all individuals of the:

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community

species

population

family

Tundra ecosystem is a vast treeless region bordering the:

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Pacific ocean

Atlantic ocean

Arctic ocean

Arabian sea

Two main types of environment factors are:

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Geotropism and phototropism

Abiotic and biotic

Land aquatic

None of these

The parasites that live outside the body of the host are called:

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Endoparasites

Ectoparasites

Heteroparasites

Both a & c

Blood pressure is also an example of _______ trait

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Multifactorial

Qualitative

Single genic

Both a & b

Life on earth is affected by both

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Weather and water

Weather and climate

Climate and water

Water and air

Newly synthesized Large proteins are digested into small viral proteins by

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Host protease

Viral protease

Viral RT

Host pepsin

Mascara is a type of:

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Lion

Bird

Monkey

Bear

Which of the following acts as a bridge between enzyme and substrate?

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Activator

Cofactor

Prosthetic group

Apo-enzyme

Catalase and chymotrypsin have similar

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Substrate

Product

Optimum pH

Metabolic impact

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

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Predation

Symbiosis

Parasitism

None of above

The animal that is caught and eaten away is called

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Victim

Prey

Predators

Host

Man depends foams are potential sources of

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Carbon monoxide

Sulphur dioxide

Chlorofluorocarbons (CFCs)

Lead compounds

Man has ____________ linkage group

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23

21

25

46

The term ecology comes form the ______ words oikos, meaning "The family household"

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Greek

Latin

English

French

Queen victoria was having which kind of haemophilia

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A

B

C

None

The study of different communities (grouping of population) in relation to their environment is called

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Autecology

Synecology

Ecology

Biogeopraphy

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

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Foliage lichens

Mosses

Crustose lichens

Fruiticose lichens

bare rocks are the habitats of

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Mosses

Lichens

Grasses

Trees

Motor neurons are

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Multipolar

Bipolar

Unipolar

Tripolar

Which characteristic is common in both cnidarians and flatworms

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Digestive system with a single opening

Dorsoventrally flattened bodies

Radial symmetry

Flame cells

Point mutation occurs in

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Sickle cell anemia

Phenylketonuria

Alkaptonuria

All

In lytic cycle, the relationship between bacterium and bacteriophages is

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Symbiotic

Master-slave

Husband wife

Host-guest

Animals that have their body cavity filled with parenchyma are

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Acoelomates

Coelomates

Pseudocoelomates

Tunicates

Rh factor or antigen was first studied in

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Man

Owl

Monkey

Fish

The study of a single population's relationship to its environment will be called as

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Autecology

Synecology

Ecology

Biogeopraphy

A phenotype which can't be expressed in heterozygous state but can only be expressed other in homo or hemi form, would be

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Dominant

Bombay

Recessive

Ordinary