Question # 1

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

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community

species

population

family

Parapodia are organs of locomotion in ……

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Leech

Planaria

Earthworm

Neries

They are Tumor causing viruses and are usually host specific

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Polio viruses

Retroviruses

Oncoviruses

Both b and c

A thin layer (zone) of earth in which all living organisms exist is called:

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Biosphere

Biome

Ozone

Ecosphere

The amount of energy left after plants have met their respiratory needs shows up the plant:

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Not productivity

Gross productivity

Secondary productivity

Bio energy

Tape worm is the example of

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Endoparasite

Ectoparasite

Outer parasite

All of above

Population is a localized group of individuals belonging to :

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same species

different species

same community

same stand

Primary succession that starts on a dry habitat is called:

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Hydrosere

Derosere

Xerosere

Aquasere

Is is universally accepted by biologists that mammals have evolved from reptilian ancestors called …………

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Cotylosaurs

Dinosaurs

Cotylostomata

Amphibians

Mutatuons are inherited only if they occur in the

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Gland cells

Gametes

Muscle cells

Somatic cells

Chloroplasts and mitochondria differ from one another because

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Both are membranous organelles

Both are non-membranous organelles

Both are not present in all cells

Both do not contain proteins

Green photosynthetic plants are

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Producers

Consumers

Decomposers

None of the above

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

Climax in zerosere is the establishment fo

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Woody forest

Grasses

Herbs

Shrubs

Diabetes is the leading cause of

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Kidney failure

Adult blindness

Heart disease

All of these

Pick out the phospholipid from the following

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Phosphatidylserine

Lecithin

Phosphatidylcholine

All

Ecology is a ______ word.

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German

British

French

Greek

It brings about an increase in blood glucose level mainly by its production from glycogen

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Insulin

Glucagon

Cortisol

Aldosterone

Prosthetic groups are

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Radicals

Inorganic molecules

Organic molecules

Metal ions

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

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Nucleoside

Nucleic acid

Nucleotide

Nuclein

Consumers are ______ organisms

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Autotrophic

Heterotrophic

Decomposers

None of above

Predation is a process of

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Prey

Predator

Prey and predator

None of these

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

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Reforestation

Afforestration

Deforestration

Both a and b

Parasitism is an association between a host and a parasite, which ivolves providing the parasite with:

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Food

Protection

Conditions for its survival

All a, b, c

Animals are

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Producers

Consumers

Decomposers

Non of the above

Heterotrophic organisms are basically:

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Producers

Consumers

Producer and consumers

None of these

The bacteria in the root nodules fix ______ in soil air, converting it to amino acids

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Nitrogen

Phosphorus

Sulphur

Iron

An animal that preys other animals is a

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Predator

Carnivore

Consumer

All

Optimum pH of all human enzymes is

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Variable

Same

Acidic

Alkaline

Which of the following are suicidal bags

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Lysosomes

Ribosomes

Centriole

Mitochondria

The receptors which are 27 times more abundant than cold receptors

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Pressure receptors

Pain receptors

Heat receptors

Light receptors

Primary consumers form ______ trophic level

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First

Second

Third

Forth

A symbiotic association between a fungus and the roots of higher plants is known as

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Lichen

Parasitism

Mycorrhiza

Commensalism

______ 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

The study of relationship of a single population to its environment is called:

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Autecology

Synecology

Both a & b

None

Head of T4 bacteriophage contain

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Single stranded DNA

Double stranded DNA

Single stranded RNA

Both RNA and DNA

Which one of the following is associated with intracellular transport of material?

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Golgi apparatus

Centriole

Endoplasmic reticulum

Lysosome

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

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Greek

Latin

English

French

Resting membrane potential of a neuron is

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50mV

-70mv

-80mV

90mV

Peptidoglycan or murine is a special or distinctive feature of cell wall in

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Algae

Bacteria

Fungi

Plants

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

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500 feet

700 feet

600 Feet

1000 Feet

Succinic acid differs from malonic acid by

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OH

CH₂

CH₃

CHO

Which of the following is not the true about predation

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Prey increases by increasing the predation

Predation increases by increasing the prey

Prey decreases by increasing the predation

Prey must follow the predation

Viruses containing RNA rather than DNA are called

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Riboviruses

Bacteriophages

Rotaviruses

Retroviruses

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

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Crossing over

Hopping

Taking over

Segregation

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 +

Regulation of hunger and menstrual cycle is controlled by

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Cerebrum

Thalamus

Hypothalamus

Pons

The cells absent in sponges are

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Chondrocytes

Pinacocytes

Choanocytes

Archeocytes

Blood pressure is also an example of _______ trait

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Multifactorial

Qualitative

Single genic

Both a & b

Causative agent of mysterious brain infection is composed of

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DNA+Protein

RNA+Protein

RNA only

Protein only

The example of decomposers of the ecosystem are the

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Fungi

Fungi and bacteria

Bacteria

Viruses

Chlorofluorocarbons are

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Organic

Inorganic

Intermediate

Solid

Which is incorrect about resting membrane potential

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Na+ ions are ten folds higher outside

2 Na+ move out for 3 K+ move in

K+ ions are twenty folds higher inside

Some k+ ions leak out

The animal that is caught and eaten away is called

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Victim

Prey

Predators

Host

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

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Autecology

Synecology

Ecology

Biogeopraphy