Question # 1

Lichens have thick crust and live in extreme conditions is a successional stage of

Choose an answer

Foliage lichen

Crustose lichen

Moss stage

All of these

Queen victoria was having which kind of haemophilia

Choose an answer

A

B

C

None

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

Choose an answer

Mutualism

Commensalism

Parasitism

All of above

Genetic basis of ABO blood group system was explained by:

Choose an answer

Landsteiner

Levine

Bernstein

Carl Correns

The succession started on deserts is termed as

Choose an answer

Hydrosere

Xerosere

Derosere

None of the above

Primary sensory areas are present in

Choose an answer

Cerebral cortex

Cerebral medulla

Cerebellum

Medulla oblamgata

Biosphere is spread out over the surface of planet earth extending about:

Choose an answer

2/4 km

4/6 km

6/8 km

8/10 km

When a single gene has multiple phenotypic effects, the phenomenon is called:

Choose an answer

condominance

epistasis

pleiotropy

sex-linkage

The chances of which hemophilia is equal in males & females

Choose an answer

A

B

C

All

Producers are

Choose an answer

Heterophs

Green plants

Carnivores

Herbivores

Insulin receptors are present in

Choose an answer

Cytoplasm of muscle cells

Cell membrane of liver cells

Cell membrane of muscles and liver cells

Cell membrane of all body cells

Skeleton of echinoderms is originated from

Choose an answer

Ectoderm

Endoderm

Mesoderm

Epidermis

The solar energy used to evaporate water, heat up soil and then lost to the outer space is:

Choose an answer

99%

77%

55%

33%

How may gene pairs contribute to the wheat grain colour?

Choose an answer

one

two

three

four

The deficiency of which one of the following is cause of goiter

Choose an answer

Iodine

Calcium

Potassium

Iron

The total energy from the sun is trapped by the producers in an ecosystem is about:

Choose an answer

20%

10%

5%

1%

This is a ------------------- relationship between algae and fungi

Choose an answer

Symbiotic

Mutualistic

Parasitic

Mycorrhizal

The amount of energy left after plant have met their respiratory need is net primary production called as

Choose an answer

Mass

Gross production

Biomass

None

The sucessions started on water is called as

Choose an answer

Hydrosere

Xerosere

Derosere

None of the above

Optimum pH of all human enzymes is

Choose an answer

Variable

Same

Acidic

Alkaline

It is community relay

Choose an answer

Niche

Evolution

Speciation

Succession

The fourth trophic level includes the:

Choose an answer

Producers

Tertiary consumers

Secondary consumers

None of these

Endangered plant species have been recorded to more than:

Choose an answer

600

400

500

300

Green house effect, acid rain headaches and coughs are related to which of the followings?

Choose an answer

Oxides of nitrogen

Oxides of sulphur

CO

CFCs

Pick a non-reducing sugar

Choose an answer

Lactose

Sucrose

Glucose

Fructose

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

Choose an answer

Peptide

Hydrogen

Ionic

Ester

Lichen is the example of

Choose an answer

Mutualism

Commenaslim

Parasitism

All of above

Which is responsible for hyperpolarization across membrane

Choose an answer

Disturbing of charge

Late closing of K+ gates

Influx of Na+

Efflux of Na+

Primary consumers form ______ trophic level

Choose an answer

First

Second

Third

Forth

Darwin proposed a mechanism for evolution, which he termed

Choose an answer

Natural selection

Special reaction

Adaptation

Descent with modification

Similar groups of individuals who can interbreed and produce organisms of their own kind form a:

Choose an answer

population

community

species

succession

The bond formed between glucose and fructose to form sucrose

Choose an answer

α 1 , 4 Glycosidic bond

β 1 , 4 Glycosidic bond

α 1 , 2 Glycosidic bond

β 1 , 2 Glycosidic bond

Endocytosis of an apoptotic body is termed as

Choose an answer

Pinocytosis

Exocytosis

Phagocytosis

Apoptosis

The first comers in an area are termed as

Choose an answer

Consumers

Producers

Pioneers

All of above

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

Choose an answer

Two

Three

Four

Five

Acid rain is mainly due to

Choose an answer

SO₂

NO₂

Lead components

Both a and b

In littoral zone, the zooplanktons are:

Choose an answer

Protozoan and coelenterates

Protozoan and porifers

Protozoan and flatworms

Protozoan and crustacean

Pick the odd one

Choose an answer

Cellulose

Galactose

Agar

Pectin

An exchange of segments between non-sister chromatids of homologous chromosomes during meiosis is termed as

Choose an answer

Crossing over

Hopping

Taking over

Segregation

Fresh water ecosystem covers less than ______% of the hydrospheric ecosystems

Choose an answer

2

3

1

4

Radial symmetry is present in

Choose an answer

Adults of annelida

Adults of echinodermata

Adults of Cnidaria

Both B and C

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

Choose an answer

Secondary succession

Primary succession

Succession

Climax period

The living organism which can prepare their own food are:

Choose an answer

predators

parasites

producers

prey

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

Choose an answer

Greek

Latin

English

French

Food chain is an example of

Choose an answer

Predation

Mode of nutrition

Trophic levels of food

All of these

Which can convert glucose to glucose 6 phosphate

Choose an answer

Hexokinase

Glucokinase

Phospho fructokinase

Both a & b

A common animal of temperate deciduous forests is the:

Choose an answer

Kangaroo

Cat

Leopard

Rhesus Monkey

Which one of the following is not the main ionic nutrient

Choose an answer

Ca

Na

K

U

What are chances for having Rh-ve baby if one parent is Rh+ve and (homozygous) and other is Rh-ve

Choose an answer

25%

50%

100%

0%

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

Choose an answer

Producers

Consumers

Decomposers

All of the above

Charles Eton defined the niche as the species:

Choose an answer

Work

Employment

Job

Occupation

In mitochondria, small knob like structure called FI particles are found in

Choose an answer

Outer membrane

Inner membrane

Outer compartment

Inner compartment

A Cell interacts with its external environment through

Choose an answer

Cell Wall

Nuclear membrane

Plasma membrane

Cytoplasm

Predation is a process of

Choose an answer

Prey

Predator

Prey and predator

None of these

The root nodules bacteria fix ______ in sil air:

Choose an answer

Parasitism

Carbon dioxide

Nitrogen

Hydrogen

______ incorporate gaseous nitrogen from air into organic nitrogen containing compounds

Choose an answer

Nitrogen fixing bacteria

Nitrogen degrading bacteria

Both A and B

None of above

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

Choose an answer

25%

30%

50%

75%

The correct sequence in a food chain is

Choose an answer

Mice - green plants - snake - hawke

Green plants - mice - snake - hawk

Mice - snake - green plants - hawk

Green plants - hawk - snake - mice

Which of the following is not affected by enzymes

Choose an answer

Nature and properties of end products

Nature and properties of reactants

Speed of biochemical reaction

Efficiency of biochemical reaction

Biosphere is a thin layer of ______ in which all living organism exist

Choose an answer

Earth

Air

Space

None of above

Identify correct trophic level of food chain

Choose an answer

Fox >>> rabbit >>> beetle

Dog >>> Rabbit >>> grass

Owl >>> Rat >>> Rabbit

Fox >>> beetle >>> Rabbit

In case of sickle cell anemia, in place of glutamic acid, _________ is found

Choose an answer

Histidine

Valine

Proline

Leucine

The productivity can be indicated by:

Choose an answer

Consumption of water and evolve of O₂

Consumption of CO₂ and water

Consumption of CO₂ and evolve of O₂

Consumption of minerals and evolve of N₂

Degenerated testes are present in abdomen in which of these cases

Choose an answer

Down's syndrome

Klinefelter's sysndrome

Turner's syndrome

Testicular ferminization

The amount of DNA in _____ is one half to that of_____:

Choose an answer

Somatic cells, Germ cells

Osteocytes, Somatic cells

Germ cells, Somatic cells

Somatic cells, Gametocytes

All chromosomes other than sex chromosomes are called

Choose an answer

Linked Chromosomes

Autosomes

Autophagosommes

Dictyosomes

Function of succinic dehydrogenase is aided by

Choose an answer

Metal ion

Vitamin

NAD

FAD

Ornithology is the sudy of

Choose an answer

Mammals

Reptiles

Insects

Birds

Regional ecological community of plants & animals primarily determined by climate

Choose an answer

Biome

Niche

Habitat

Both b & c

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:

Choose an answer

environment

ecosystem

stable community

ecological succession

All of the following are present in mitochondria, EXCEPT

Choose an answer

Cristae

Ribosomes

DNA

Thylakoids

Topography is study of?

Choose an answer

Population

Individula

Earth

birds

Substances cross the cell membrane more easily when they are

Choose an answer

water soluble

protein soluble

alcohol soluble

lipid soluble

Pick up the most developed coelomates

Choose an answer

Echinoderms

Annelids

Chordates

Insects

Who for the first time found white eye mutant in drosophila ?

Choose an answer

Morgan

Bridges

Correns

De Varies

Which of the following is true about mesoglea

Choose an answer

Acellular

Mesodermal

Cellular

Multicellular

Which of the following things were not collected by Darwin?

Choose an answer

Specimens of diverse faunas and floras of south America

South American fossils

13 types of finches

Turtles

The ecosystem present on land or soil is called

Choose an answer

Terrestrial ecosystem

Lithospheric ecosystem

A and B

None

Wallace developed a Theory of Natural Selection similar to that of

Choose an answer

Lamarck

Linnaeus

Darwin

Lyell

Sharp rise in LH output due to estrogens is an example of

Choose an answer

Negative feedback

Positive feedback

Primary feedback

None

Which is irrelevant?

Choose an answer

Genome to virus structure

Capsomeres to Capsid

Tumors to retroviruses

Envelope to all viruses