Question # 1

Consumers that prey other animals are known as

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Predators

Preys

Parasites

Competitors

The phage is called temperate when it causes

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Virulence

Lysis

Lysogeny

Bursting of host cell

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

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Insulin

Glucagon

Cortisol

Aldosterone

Which of the following is dimer of glucose

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Sucrose

Fructose

Maltose

Cellulose

STH promotes_____ after puberty

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Protein synthesis

Cell differentiation

Metabolism

Cell division

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

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Fermentation

Respiration

Photosynthesis

Chemosynthesis

In temperate grassland the rate primary production is about:

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700 - 1400 g/m²

700 - 1600 g/m²

700 -1800 g/m²

700 - 1500 g/m²

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

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Foliage lichens

Mosses

Crustose lichens

Fruiticose lichens

Tritanopia is blindness of :

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Red Colour

Green Colour

Blue Colour

Pink Colour

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

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Arthropoda

Bivalvia

Gastropoda

Cephalopoda

Endosymbiont hypothesis was first proposed by

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Lynn Margulis

Malthus

Cuvier

Darwin

The organelle that protect the cell from invading organisms is

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Centriole

Lysosome

Mitochondrion

Vacuole

Taj Mahal's marble has been affected by

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CFC's

Lead pollution

Acid rain

None

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

bare rocks are the habitats of

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Mosses

Lichens

Grasses

Trees

Which of the following has chitinous cuticle in the exoskeleton

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Arthropoda

Porifera

Echinodermata

Annelida

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

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Ostia

Osculum

Spicules

Medreporite

Consumers

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Are primarily animals that obtain energy directly or indirectly from producers

Are primarily bacterial organisms that obtain energy directly or indirectly from producers

Are secondary animals that obtain energy directly or indirectly from producers

Are secondary plants that obtain energy directly or indirectly from producers

Primary consumers form ______ trophic level

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First

Second

Third

Forth

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

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Two

Three

Four

Five

Animal cells differ from plant cells in having

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80 S ribosome

Chloroplasts

Mitochondria

Centrioles

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

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Symbiotic

Mutualistic

Parasitic

Mycorrhizal

In each case succession begins with few hard invaders called:

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Producers

Consumers

Pioneers

Beginners

The term ecology was first used by a ________ zoologist.

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American

Canadian

German

Greece

Virus without envelope is

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HIV

Hepatitis B

Polio virus

Hepatatis C

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

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 +

The best known phages are T phages that infect

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Pseudomonas

Mycoplasma

Escherichia Coli

Salmonella

About 20 years ago what was the rate at which human population was increasing

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1%

2%

3%

5%

Melanin pigment is produced under the hormone

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ADH

MSH

STH

TSH

A thin layer of earth in which all living organisms live is called:

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Biosphere

Habitat

Niche

Hydrosphere

Man is

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Primary consumers

Secondary consumers

Tertiary consumers

All of above

Fungi as well as bacteria are generally known as

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Producers

Consumers

Decomposers

None

Insulin is a/an:

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Osmotic Protein

Transport Protein

Regulatory Protein

Catalytic Protein

Prosthetic groups are

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Radicals

Inorganic molecules

Organic molecules

Metal ions

The fungi and bacteria, which obtain their energy from the dead and decaying plants and animals are:

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Decomposers

Consumers

Producers

Scanvengers

Queen victoria was having which kind of haemophilia

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A

B

C

None

Point mutation occurs in

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Sickle cell anemia

Phenylketonuria

Alkaptonuria

All

In case of symbiosis ___________ is benefited.

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Host

Parasite

Both host and parasite

None of these

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

______ components include all living organisms including plants and animals supported by biosphere

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Biotic

Abiotic

Physical

Both a and b

The only phylum included in Grade Radiata is:

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Porifera

Aschelminthes

Platyhelminthes

Cnidaria

Eukaryotes are thought to hve evolved firstly about:

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1.3 billion year ago

1.5 billion year ago

1.7 billion year ago

1.2 billion year ago

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

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Autecology

Synecology

Ecology

Biogeopraphy

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

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Taxonomy

Neurology

Ecology

Embryology

Terrestrial ecosystem have main types of ecosystem:

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Five

Four

Three

Two

Formation of ES complex activates the______ site of an enzyme

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Active

Binding

Catalytic

Allosteric

The hormones which share common hypothalamic factor are

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FSH and LH / ICSH

ACTH and GH

ICSH and LTH

Prolactin and FSH

The eating of grasses is termed as

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Grassing

Browsing

Eating

None of above

All chromosomes other than sex chromosomes are called

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Linked Chromosomes

Autosomes

Autophagosommes

Dictyosomes

The Organic biomolecule which is widespread in bacterial animal and plant cells is

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Wax

Glucose

Acyl glycerol

Phospholipids

The oxidation of ammonia is

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Ammonification

Nitrogen fixation

Nitrification

Denitrification

The pairs of gills present in cyclostomata are

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5-7

10-12

6-14

4-5

A Cell interacts with its external environment through

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Cell Wall

Nuclear membrane

Plasma membrane

Cytoplasm

It is not a steroid hormone

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Epinephrine

Estrogen

Progesterone

17 β hydoxy Testosterone

Some ______ years ago human population and conversion of land to agricultural production began

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10,000

40,000

5000

None

Which enzyme deficiency leads to phenylketonuria

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Phenylalanine oxidase

Phenylalanine hydroxylase

Phenylalanine synthase

Phenylalanine carboxylase

Chlorophyll molecules resemble with which part of hemoglobin?

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Polypeptide chains

Globin part

Non-Protein

All

The study of different communities to environment is called

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Autecology

Synecology

Microbiology

Ornithology

Forest ecosystem is subdivided into ____ type of forests.

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Two

Four

Five

Three

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

These are the receptors which respond to the mechanical condition of internal organs

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Nocireceptors

Receptors of skin

Receptors of stomach wall

Receptors of eye

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

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GH

ICSH

Prolactin

TRF

All living organisms supported by biosphere are called

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Biotic components

Abiotic components

Autecology

Synecology

Snails are the intermediate hosts of

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Fasciola hepatica

Schistoma

Taenia solium

Ancyclosoma duodenale

Lichens are dual organisms composed of symbiotic association of algae living within a fungus:

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Mycelium

Sporangium

Hyphae

Rhizophore

The ecosystem consists of two basic interacting components:

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Living and physical

Biotic and abiotic

Living and biotic

Both a & b

Mutation of one or two N-bases is

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Inversion

Point mutation

Deletion

Chromosomal aberrations

Allosteric enzymes have ___ major sites

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1

2

3

4

SRY in located at the tip of

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Short arm of X-chromosome

Short arm of Y-chromosome

Long arm of Y-chromosome

Long arm of X-chromosome

Which of the following acts as template strand for reverse transcription

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Viral DNA

Viral RNA

Host DNA

Host RNA

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

Pick up the most developed coelomates

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Echinoderms

Annelids

Chordates

Insects

When Fructose form ring structure, It is

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6 Cornered

5 cornered

4 cornered

3 cornered

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

Leech is preferably a

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Host

Parasite

Predator

Mutualist

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

The term ecology comes from the Greek words Oikos, meaning "the family household" and logy (logos) meaning:

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The study of

Living

Building

Niche

Which of the following reaction is reverse of others

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Hydrolysis

Decondensation

Decomposition

Condensation

Ornithology is the sudy of

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Mammals

Reptiles

Insects

Birds

In limnetic zone the phytoplankton are:

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Cyanobacteria

Protozoan

Fungi

Bacteria