Question # 1

Color blindness, haemophilia and gout form linkage group onj

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Chromosome 9

Chromosome 19

x-chromosome

y-chromosome

Major unit of ecology is :

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Ecosystem

Community

Biosphere

Population

Succession ends with a diverse and relatively stable:

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Xerosere

Derosere

Pioneers

Climax community

It is not a germ layer

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Ectoderm

Endoderm

Blastoderm

Mesoderm

Establishment of new forest at places where no forests existed previously is called

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Reforestation

Afforestration

Deforestration

Both a and b

--------------- and --------------- have same number of chromosome

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Man, Chimpanzee

Chimpanzee, Potato

Man, Potato

Potato, Tomato

Macronutrients are required by the organisms in:

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Small amount

Large amount

Traces

Never required

Tape worm is the example of

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Endoparasite

Ectoparasite

Outer parasite

All of above

How plants are deprived of nutrients by acid rain

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Due to teaching

Due to fall in pH

Acid creates a barrier to absorption

Unknown cause

The sucessions started on water is called as

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Hydrosere

Xerosere

Derosere

None of the above

In sickle cell beta chain glutamic acid is replaced by valine which is sixth amino acid from

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N-Terminal

C-Terminal

R-Terminal

H-Terminal

Mutation may be caused by

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Chemicals

Radiations

Mutagens

All of these

The compound formed by the combination of a base and a pentose sugar is called:

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Nucleoside

Nucleic acid

Nucleotide

Nuclein

"Litho" means

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Air

Earth / soil

Water

All of these

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

Crustose refers to:

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Aquatic lifeless structure

Aquatic lively structure

Land lively structure

Land lifeless structure

Genes for alpha and beta chains of hemoglobin are found on which chromosomes?

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Chromosome 16 alpha; chromosome 11 beta

Chromosome 11 alpha; chromosome 16 beta

Chromosome 11

Chromosome 16

Plants like cacti store their water in large:

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Collenchyma tissues

Mesenchymal tissues

Parenchyma tissues

Epidermal tissues

Ecology is a ______ word.

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German

British

French

Greek

Green plants are ______ trophic level

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First

Second

Third

Forth

Synaptic vesicles are present in synaptic knob that is part of

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Post synaptic neuron

Pre synaptic neuron

Both neurons

Second neuron

Pick up the correct statement according to induced fit model of enzyme action

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Enzyme induces changes in substrate structure

Substrate induces changes in enzyme structure

Active site of enzyme is a rigid structure

Active site of enzyme is used as a template +

Skeleton of echinoderms is originated from

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Ectoderm

Endoderm

Mesoderm

Epidermis

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

Among the scientists who believed in divine creation as

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Darwin

Carolous Linnaeous

Lamarck

Wallace

_____is the study of interaction between living organism and their environment

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Evolation

Genetics

Ecology

Sociology

Global warming is the result of

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Ozone layer depletion

Acid rain

Green house gases

All of them

Overgrazing resulted in

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Diminishing the grasses

Desert

Barren land

All of these

Which of the following is a living character of virus

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Formation of Crystals

Production of new viral particles

Coordination

Metabolism

Infestations are the diseases which are caused by ________ in living organisms

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Worms

Saprophytes

Bacteria

Virus

In littoral zone, the zooplanktons are:

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Protozoan and coelenterates

Protozoan and porifers

Protozoan and flatworms

Protozoan and crustacean

Which component of the cell is mainly concerned with production of cell secretions?

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Ribosome

Cytoskeleton

Mitochondria

Golgi

Elements required in large amount are called

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Micronutrient

Macronutrient

Organic elements

Inorganic elements

Which oxides causes headache and brain damage

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Nitrogen

Lead

CO₂

CO

The larva formed during the life cycle of Annelida is

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Glochidium larva

Bipinnaria larva

Trochophore larva

Tornaria larva

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

Diseases in living organisms caused by parasites are called:

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Infestations

Plaques

Influxes

Swarms

It is incorrect statement about hormones

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Endocrine secretion

Initiate metabolism

Organic

Transported by blood

It is not a symptom of AIDS

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Swollen lymph nodes

Loss of immunity

Swollen neck

Pneumonia

Deficiency of sex hormones in adults results in

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Sexual immaturity

Mortality

UTI

sterility

Which of the following bond is not present in tertiary structure of proteins

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Peptide

Hydrogen

Ionic

Ester

Anti-Rh antibodies appear in plasma

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During first few months

During last months

Only when stimulated

If Rh⁺individual mistakenly receives Rh^-blood

In an ecosystem after succession, a new invaders are called

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Pioneers

Predecessors

Climax community

None of these

Terrestrial ecosystem have main types of ecosystem:

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Five

Four

Three

Two

Secondary consumes form ______ trophic level

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First

Second

Third

None of above

The intake of liquid material across the cell membrane is called as

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Phagocytosis

Pinocytosis

Endocytosis

Exocytosis

When living and non-living interact to produce a stable system in which exchange of materiel with flow of energy takes place, it forms a/an:

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environment

ecosystem

stable community

ecological succession

In an ecosystem sheep and rabbits are examples of

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Producers

Predators

Grazers

Saprophytes

A Cell interacts with its external environment through

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Cell Wall

Nuclear membrane

Plasma membrane

Cytoplasm

Hormones secreted by follicles in female

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Estrogen

Progesterone

FSH

Both a and b

A little light is left to power photosynthesis at the depth of:

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500 feet

700 feet

600 Feet

1000 Feet

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

Traffic of substance between nucleoplasm and cytoplasm is controlled by

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Nuclear Envelope

Nuclear membrane

Nuclear pores

Endoplasmic reticulum

The chemical elements essential for life in living organisms are called ______ elements

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Biogenic

Abiogenic

Nutrient

Both A and C

Nerve which carries impulses from CNS to effectors

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Sensory

Inter

Motor

Associative

About ______% if the total energy from the sun is trapped by the producers in an ecosystem

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0.5

1.0

1.5

2.0

The major components of ecosystem are

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2

3

4

6

Pick a non-reducing sugar

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Lactose

Sucrose

Glucose

Fructose

What is the theoretical number of chemically different dipeptide that can be made from 2 different amino acids

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1

2

4

8

Glycerol, fatty acids and phosphoric acid give rise to:

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Phospholipid

Phosphatidic acid

Phosphatidyl choline

Phosphatidylethnoline

The parasite that lives inside the body of the host is called as

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Endoparasite

Ectoparasite

Outer parasite

All of above

Motor neurons are

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Multipolar

Bipolar

Unipolar

Tripolar

Highest number of carbons are present in

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Butyric acid

Acetic acid

Palmitic acid

Oleic acid

Which one of the following always contains DNA?

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Centriole

Lysosome

Golgi apparatus

Mitochondrion

Xerophytes can withstand with extreme conditions due to the presence of

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Large parenchyma cells in the leaf

Sunken stomata

Thick cuticle and palisade layer

All of these

If six cells out of 10, do crossing over what will be percentage of cross over gametes

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60%

30%

40%

50%

Food web maintains the stability of

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Environment

Biosphere

Ecosystem

Biotic components

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

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Predation

Symbiosis

Parasitism

None of 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

The synecology is also termed as

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Community ecology

Population ecology

Specie ecology

All of above

Function of succinic dehydrogenase is aided by

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Metal ion

Vitamin

NAD

FAD

The idea of inheritance of acquired characteristics was presented by

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Margulis

Lamarck

Linnaeus

Cuvier

How may gene pairs contribute to the wheat grain colour?

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one

two

three

four

In this type of relationship only one organism benefits from the relationship. The other is not affected at all

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Mutualism

Commensalism

Parasitism

All of above

Most unifying characteristics of all types of cells is

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Cell membrane

Nucleus

Ribosomes

S.E.R

Global warming is due to

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CFC's

SO₂

O₃depletion

CO₂

The chemical elements essential for life in living organisms are called:

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Biogenic elements

Nutrient elements

Both a & b

Genetic elements

Which region of the nucleolus has DNA?

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Central fibrillar region

Central granular region

Peripheral granular region

Peripheral fibrillar region

Loins are

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Primary consumers

Secondary consumers

Tertiary consumer

All of above

Herbaceous stage in xerosere is the __________:

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First stage

Third stage

Fourth stage

Last stage

Life on earth is affected by both

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Weather and water

Weather and climate

Climate and water

Water and air