Question # 1

When a haemophilic carrier woman marries a normal man, who among her offspring may be affected

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all her children

all her daughter

half of her daughter

half of her sons

Lamarck was incharge of invertebrate collection at Natural History Museum is

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Berlin

Paris

California

Brun

bare rocks are the habitats of

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Mosses

Lichens

Grasses

Trees

In 1917, Joseph Grinnell an American ornithologist first proposed the term niche in:

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Taxonomy

Neurology

Ecology

Embryology

Circulatory system is open type in all of the following, EXCEPT

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Arthropoda

Bivalvia

Gastropoda

Cephalopoda

Which one of the following acts as a site for storage of water and cells products or metabolic Intermediates?

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Chloroplast

Mitochondrion

Vacuole

Endoplasmic reticulum

Diabetes insipidus is caused by

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Lack of aldosterone

Overproduction of ADH

Lack of ADH

Lack of insulin

Primary consumers form ______ trophic level

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First

Second

Third

Forth

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

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Biogenic

Abiogenic

Nutrient

Both A and C

Deficiency of sex hormones in adults results in

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Sexual immaturity

Mortality

UTI

sterility

Nutrients required by organisms in small quantity or in trace amount like zinc, molybdenum, iron, iodine are:

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Macronutrients

Micronutrients

Mega Nutrients

Both a & c

Which of the following is a common feature of all viruses

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DNA replication in cytoplasm

RNA synthesis in nucleus

Protein synthesis in cytoplasm

Reverse transcription in cytoplasm

Which one of the following always contains DNA?

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Centriole

Lysosome

Golgi apparatus

Mitochondrion

Succinic acid differs from malonic acid by

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OH

CH₂

CH₃

CHO

First invertebrate to develop a nervous system is

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Sponges

Cnidarians

Flat worms

Round worms

Much of nitrogen found in the soil is the result of:

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Degeneration

Decomposition

Denitrification

Assimilation

Which of the following is not true about biotic components

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Producers

Consumers

Decomposers

Atmosphere

According to fluid mosaic model of cell membrane

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The most common type of molecules in the membrane are proteins

Basic membrane structure results from how proteins interact with water

The membrane is highly mobile mixture of phospholipids and proteins

The unique properties of cell types are determined by their phospholipids

Give an example of transport across cell membrane using energy

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Endocytosis and exocytosis

Reabsorption of Na+ from ascending loop of Henle

Reabsorption of water from collecting duct

All

The oxygen concentration in the air is maintained by the green plants which release it during

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Fermentation

Respiration

Photosynthesis

Chemosynthesis

Vector for spread of African sleeping sickness is

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Anopheles

Commonhouse fly

Tse-tse fly

Honey bee

Resting membrane potential of a neuron is

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50mV

-70mv

-80mV

90mV

Inorganic ions can play a role of ¬¬¬¬¬¬¬______ in enzyme catalysis

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Coenzyme

Inhibitor

Apo enzyme

Cofactor

The essential requirement for life is:

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Minerals

Water

Carbohydrates

Proteins

Syrinx produces voice in birds. It is located

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In voice box

Near origin of bronchi

At the upper end of trachea

Inside lungs

Regulation of hunger and menstrual cycle is controlled by

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Cerebrum

Thalamus

Hypothalamus

Pons

About three billion base pairs are present in the genome of a

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Horse

Dog

Man

Monkey

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

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Progression

Sequence

Succession

String

When succession starts on dry soil or rocks it is called:

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Hydrosere

Derosere

Xerosere

lithosere

Ecology is a ______ word.

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German

British

French

Greek

The chief reservoir of nitrogen is the

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Atmosphere

Water

Soil

Rain

Which of the following properties is incorrect for both mitochondria and chloroplast?

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Both have an electron transport system

ATP synthesis

Both are present in all cells

Both have double membrane structures

Succinic acid is the ____ of succinic dehydrogenase which undergoes____

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Active site, reduction

Prosthetic group, reduction

Substrate, oxidation

Substrate, reduction

Oxidative metabolism is carried out ____ of mitochondria

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In the intramembrane space

On the surface of inner membrane

In the inside of outer membrane

In the matrix

Which of the following is not an abiotic component

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Atmosphere

Hydrosphere

Lithosphere

Producers

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

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%

A lichen is the symbiotic association between a

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Fungus and a bryophyte

Roots of higher plants and an alga

Fungus and an alga

Roots of a higher plants and a fungus

The term ecology was first used by a ________ zoologist.

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American

Canadian

German

Greece

Sickle cell mutation affects

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One beta chain

Both beta chains

Only alpha chain

None of the alpha or beta chain

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

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Foliage lichens

Mosses

Crustose lichens

Fruiticose lichens

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

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Two

Three

Four

Five

Normal fruit flies have :

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White eyes

Bright red eyes

Light red eyes

Black eyes

Which of the following virus is DNA enveloped

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Polio virus

Hepatitis B virus

HIV

Measles virus

Which is incorrect statement about spinal cord

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White matter contains myelinated axons

Grey matter contains non myelinated axons

Grey matter contains cell bodies of sensory neurons

Location of Peripheral nerve is near to spinal cord

Macronutrients are required by the organisms in:

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Small amount

Large amount

Traces

Never required

Taj Mahal's marble has been affected by

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CFC's

Lead pollution

Acid rain

None

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

Secondary consumes form ______ trophic level

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First

Second

Third

None of above

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

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Symbiotic

Mutualistic

Parasitic

Mycorrhizal

In an ecosystem sheep and rabbits are examples of

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Producers

Predators

Grazers

Saprophytes

The pore by which the water leaves the body of sponges is called

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Ostia

Osculum

Spicules

Medreporite

The tundra vegetation supports the animals called:

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lemmings

Marchpolo sheeps

Goats

None of these

How many kinds of rhodopsins, a blue cone monochromate will have

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3

2

1

No rhodopsins

Shallow water zone of the lake near the shore is called:

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Intertidal zone

Littoral zone

profundal zone

Limnetic zone

Endangered plant species have been recorded to more than:

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600

400

500

300

A carrier mother for colour blindness does not have

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A normal boy

A carrier boy

A colour blind boy

A normal daughter

Allosteric enzymes have ___ major sites

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1

2

3

4

In 1917, Jpseph Grinnel an American ornithologist first proposed the term ______ in ecology

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Habitat

Niche

Area

Space

If non protein part is covalently bonded to the protein part of enzyme, it is known as

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Coenzyme

Prosthetic group

Activator

Cofactor

Plants growing in extreme cold soil are called:

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Sciophytes

Psychrophytes

Heliophytes

Cyanophytes

Methylation of proteins occur in

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Transport vesicles of endoplasmic reticulum

Lysosomes

Golgi apparatus

Transport vesicles of Golgi bodies

Chlorophyll molecules resemble with which part of hemoglobin?

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Polypeptide chains

Globin part

Non-Protein

All

The amount of energy left after plants have met their respiratory needs is net primary production, which shows up as plant:

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Respiration

Photosynthesis

Biomass

Reserve

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

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25%

30%

50%

75%

Armadillos, the armoured mammals live only in :

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Asia

Europe

America

Africa

Patient of AIDS is susceptible to many infections due to

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Severe pneumonia

Swollen lymph nodes

Loss of immune system

All of these

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

Animals devoid of respiratory, excretory and circulatory organs are

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Tapeworms

Sponges

Earthworm

Live fluke

Parasites which live inside the host body is called:

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Ectoparasite

Endoparasite

Intestinal parasite

Muscular parasite

The nutrient cycles are also called:

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Biochemical cycles

Geochemical cycles

Biogeochemical cycles

Elemental cycles

Ribozyme is found in

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Mitochondria

Cytoplasm

Lysosomes

Ribosomes

The dead plants and animal bodies in lakes are decomposed by certain:

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Cyanobacteria

Bacteria

Mold

Protozoans

Change in temperature from 30o C to 40o C in human body will cause ____ in rate of reaction

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Increase

Decrease

First increase then decrease

First increase then constant

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

The ecosystem present on land or soil is called

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Terrestrial ecosystem

Lithospheric ecosystem

A and B

None

All food chains and food webs begin from

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Consumers

Green plants

Fungi and bryophytes

Dead organic matter

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

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

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Autecology

Synecology

Ecology

Biogeopraphy

In tandra forests the willow tree with an age of 50 year have diameter of trunk only:

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5 cm

7 cm

8 cm

10 cm

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

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Oxides of nitrogen

Oxides of sulphur

CO

CFCs