Biology Online Quiz Test 07

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Biology Online Quizzes

Biology Quiz Test 07 test contains multiple-choice questions with answers for competitive exam preparation. We have provided Biology online quizzes below which include questions related to different topics.

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Biology Quiz Test 07

______ respiration is the process by which cell utilized oxygen and produces CO2 ?
(A) Cellular
(B) Organismic
(C) Both of these
(D) None of these

Answer
Cellular

Active transport is dependent on
(A) Photosynthesis
(B) Respiration
(C) Photophosporylation
(D) None of these

Answer
Respiration

Normal body temperature in mamals like human beings is
(A) 26 – 28°C
(B) 36 – 38°C
(C) 46 – 48°C
(D) 56 – 58°C

Answer
36 – 38°C

Lipid molecules can store double amount of energy as compared to same amount of carbohydrate because of high number of
(A) C-C bonds
(B) C-H bonds
(C) C-N bonds
(D) C-O bonds

Answer
C-H bonds

Breeders have developed new and better varieties of food items by using which technique?
(A) Pasteurization
(B) Hydroponic culture technique
(C) Genetic engineering
(D) Biological control techniques

Answer
Genetic engineering

One celled green ptotists are included in
(A) Monera
(B) Algae
(C) Slime molds
(D) Plants

Answer
Algae

______ is a nervous disorder characterized by involuntary tremors, diminished motor power and rigidity?
(A) Epilepsy
(B) Meningitis
(C) Alzheimer disease
(D) Parkinson disease

Answer
Parkinson disease

Ribosomes were discovered by
(A) Golgi
(B) De Duve
(C) Palade
(D) R.Brown

Answer
Palade

Photosystem II has molecules which absorbs maximum light of
(A) 680 nm
(B) 100 m
(C) 700 nm
(D) 670 nm

Answer
680 nm

Single circuit heart is found in
(A) Fishes
(B) Amphibians
(C) Reptiles
(D) Mammals

Answer
Fishes

Coenocytic hyphae are also known as
(A) Septate
(B) Perforated hyphae
(C) Aseptate
(D) Uninucleate hyphae

Answer
Aseptate

Exoskeleton of a marine snail is composed of
(A) CaPO4
(B) CaCO3
(C) CaSO4
(D) SiO2

Answer
CaCO3

Lock and Key model was proposed by
(A) Emil Fischer
(B) Koshland
(C) Robin Williams
(D) Rudolph Virchow

Answer
Emil Fischer

More than ___________ compounds of tar of tobacco smoke are involved to cause cancer?
(A) 5
(B) 90
(C) 15
(D) 10

Answer
10

Operculum is present in
(A) bony fish
(B) sea fish
(C) cartilaginous fish
(D) none of these

Answer
bony fish

Organisms of which of the following kingdom have absorptive mode of nutrition
(A) Prokaryotae
(B) Protoctista
(C) Animalia
(D) Fungi

Answer
Fungi

The word Archaeobacteria (a division of bacteria) derived from Greek means
(A) True bacteria
(B) False bacteria
(C) Recent bacteria
(D) Ancient bacteria

Answer
Ancient bacteria

The Study of organisms inhabiting the sea and Ocean and the physical and chemical characteristics of their environment is
(A) Social Biology
(B) Marine Biology
(C) Environmental Biology
(D) Fresh Water Biology

Answer
Marine Biology

In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon
(A) Their physical properties like size & weight
(B) Physical properties of the medium like its density
(C) Their electrical properties like their charges
(D) Both a and b

Answer
Both a and b

Exoskeoeton of coelenterates terates is made up to
(A) Calcium
(B) Silica
(C) Chitin
(D) Both A & B

Answer
Calcium

An enzyme which can convert single stranded RNA into double stranded viral DNA is called
(A) DNAase
(B) RNAase
(C) DNA polymerase
(D) Reverse Transcriptase

Answer
Reverse Transcriptase

Example of bacteria requiring low concentration of oxygen is
(A) Campylobactor
(B) spirocheta
(C) E-coli
(D) Pseudomonas

Answer
Campylobactor

Ribose is an example of
(A) Trioses
(B) Tetroses
(C) Pentose
(D) Hexose

Answer
Pentose

The membrane of vacuoles is known as
(A) Vacuoloplast
(B) Tonoplast
(C) Tanoplast
(D) All of these

Answer
Tonoplast

The survival of an animal depends upon its ability to take some from its environment
(A) Chemicals
(B) Hydrocarbons
(C) Organic molecules
(D) Inorganic molecules

Answer
Organic molecules

Deoxygenated blood first enters in _________ part in fishes?
(A) Sinus venosus
(B) Right atrium
(C) Left atrium
(D) Conus arteriosus

Answer
Sinus venosus

Which of the following one is not found in series Proterostomia?
(A) Annelida
(B) Arthropoda
(C) Mollusea
(D) Echinodermata

Answer
Echinodermata

Excessive increase in temperature of medium causes the enzyme molecule to
(A) Activate
(B) Unaffected
(C) Denatured
(D) None of these

Answer
Denatured

Animals obtain carbohydrates mainly from
(A) Glucose
(B) Starch
(C) Sucrose
(D) Glycogen

Answer
Starch

Purines and pyrimidines are in equal ration in DNA. It was indicated by
(A) F.Miescher
(B) Chargaff
(C) Watson & Crick
(D) Harshay & Chase

Answer
Chargaff

Double fertilization occurs in
(A) All plants
(B) All seed plants
(C) Gymnosperms
(D) Angiosperms

Answer
Angiosperms

In all arthropods,the body is covered with a chittinous cuticle which is secreted by the
(A) Endodermis
(B) Mesophyll
(C) Chitin
(D) Epidermis

Answer
Epidermis

Resolution power of a compound microscope is
(A) 2.0 m
(B) 2-4 A
(C) 24 m
(D) 24 A

Answer
2.0 m

It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect
(A) Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones
(B) Older sediment layers have less amount of these reaioactive isotopes as that of the young ones
(C) Older sediment layers have greater amount of these radioactive isotopes as that of the young ones
(D) Older sediment layers did not have these radioactive isotopes

Answer
Older sediment layers have less amount of these reaioactive isotopes as that of the young ones

All phostosynthetic euglenoids lose their chlorophyll when grown in dark and obtain their nutrients heterotrophically this statement is
(A) True
(B) False
(C) May be true may be false
(D) Unpredictable

Answer
False

The Kingdom of recyclers is known as kingdom
(A) Algae
(B) Bacteria
(C) Fungi
(D) Embryophyte

Answer
Fungi

Primary structure of proteins determines
(A) Number of polypeptide chains involved
(B) Bending of polypeptide chains
(C) Amino acid sequence
(D) Coiling of polypeptide chains

Answer
Amino acid sequence

Secondary cell wall of sclerenchyma cells is impregnated with
(A) Cellulose
(B) Peptidoglycan and murein
(C) Lignin
(D) Pectin

Answer
Lignin

Fishes, most of the invertebrates and amphibians are examples of ________ animals?
(A) Endotherms
(B) Ectotherms
(C) Heterotherms
(D) Homeotherms

Answer
Ectotherms

Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong
(A) Globular proteins
(B) Fibrous Proteins
(C) Both a and b
(D) None of these

Answer
Fibrous Proteins

Endoskeleton is secreted by?
(A) Ectoderm
(B) Endoderm
(C) Mesoderm
(D) All of these

Answer
Mesoderm

Root like structure in saprotrophic fungi are called
(A) Rhizodis
(B) Hyphae
(C) Haustoria
(D) Constricting rings

Answer
Rhizodis

Earthworm is included in
(A) Kingdom Animalia
(B) Kingdom Plantae
(C) Kingdom Protoctista
(D) Kingdom Monera

Answer
Kingdom Animalia

An aspect of pragmatism is experiential learning, which says, education should come through
(A) experience
(B) practice
(C) knowledge
(D) observations

Answer
experience

How many years after the diagnosis of HIV AIDS will a man die?
(A) 8 years
(B) 6 years
(C) 4 years
(D) 2 years

Answer
2 years

Out of 92 naturally occurring chemical elements how many are considered as bio-elements?
(A) 6
(B) 16
(C) 26
(D) 15

Answer
16

Nervous system of nematodes consists of?
(A) Ventral nerve cord
(B) Dorsal nerve cord
(C) Lateral nerve cord
(D) All of these

Answer
All of these

Normal resting membrane potential of a neuron is
(A) – 50 mv
(B) – 60 mv
(C) – 70 mv
(D) – 80 mv

Answer
– 70 mv

Body is eel like in
(A) Cyclostomata
(B) Chondrichthyes
(C) Osteichthyes
(D) None of these

Answer
Cyclostomata

Megaphylls i.e. leaves with divided veins with an expanded lamina is a dharacteristic of
(A) Lycopods
(B) Ferns
(C) Seed plants
(D) Both b and c

Answer
Both b and c

How many species of fungi are known till now?
(A) 10000
(B) 100000
(C) 10000000
(D) 1000

Answer
100000

A series of hypothesis supported by the results of many tests is called ?
(A) Scientific law
(B) Theory
(C) Data
(D) Deduction

Answer
Theory

The animals in which coelom is formed due to splitting of mesocerm are known as
(A) Pseudocoelous
(B) Schizocoelous
(C) Enterocoelous
(D) Emphicoelous

Answer
Schizocoelous

Sleep movements are a type of
(A) Turgor movements
(B) Growth movements
(C) Tactic movements
(D) Paratonic movements

Answer
Turgor movements

ATP are consumed during
(A) Glycolysis
(B) Kreb’s cycle
(C) Light dependent phase
(D) none of these

Answer
Glycolysis

Radiolarians belong to which of the following protozoal group
(A) Zooflagellates
(B) Actinopods
(C) Foraminifera
(D) Apicomplexans

Answer
Actinopods

Pepsinogen is produced from
(A) Mucous cells
(B) Mucous cells
(C) Parietal cells
(D) Zymogen cells

Answer
All of these

Circulatory system is open type in all of the following except
(A) Arthropoda
(B) Gastropoda
(C) Pelecypoda
(D) Cephalopoda

Answer
Cephalopoda

Chlorophylls are found embedded in the ____membranes?
(A) Stroma
(B) Grana
(C) Thylakoid
(D) Intergrana

Answer
Thylakoid

The one which is present in all living things
(A) Cell nucleus
(B) DNA or RNA
(C) Cell membran
(D) Vacuole

Answer
DNA or RNA

About __________ of the body weight of a mammal is water ?
(A) 60%
(B) 65%
(C) 70%
(D) 75%

Answer
70%

______________ is the potential source of chemical energy for cellular activities?
(A) C-H bond
(B) C-O bond
(C) C-N bond
(D) P-O-C bond

Answer
C-H bond

The molecules of living matter that provide building blocks are mostly based on
(A) Carbon
(B) Nitrogen
(C) Hydrogen
(D) Ammonia

Answer
Carbon

In plants there are_______basic types of tissues?
(A) 2
(B) 3
(C) 4
(D) None of these

Answer
3

The type of plastids which help in pollination is
(A) Chromoplasts
(B) Leucoplasts
(C) Chloroplasts
(D) All of these

Answer
Chromoplasts

How many species of ascomycota occur in lichen symbiotic association?
(A) 30%
(B) 40%
(C) 50%
(D) 60%

Answer
50%

Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of special hyphal tips called
(A) Mildew
(B) Constricting ring
(C) Haustoria
(D) All of these

Answer
Haustoria

At the induction of action potential opening of Na+ gate with influx of Na+ is a ___________ processes?
(A) Active transport
(B) Passive transport
(C) Diffusion
(D) none of these

Answer
Passive transport

___ are needed as a source of energy for the vital activities of the body?
(A) Calcium
(B) Iron
(C) Water
(D) Carbohydrates

Answer
Carbohydrates

The zygote formed in liverworts is
(A) Unicellular
(B) Mulicellular
(C) Multinucleate
(D) None of these

Answer
Unicellular

Ribonucleo-protein particles are the name of
(A) DNA
(B) Nucleus
(C) Eukaryotic ribosomes
(D) RNA

Answer
Eukaryotic ribosomes

Parasites capable of living independently of its host at times is called as ___________ parasite?
(A) Obligate
(B) Strict
(C) Facultative
(D) Endoparasite

Answer
Facultative

All of the following are true for Platyhelminthes except
(A) Flatwarms
(B) Triploblastic
(C) Coelomate
(D) Bilateral symmetry

Answer
Coelomate

Helical structure is kept by the formation of _________ bonds among amino acids molecules?
(A) H bonds
(B) Disulphide Bond
(C) Ionic bond
(D) Hydrophobic bonds

Answer
H bonds

Sperms released in water are carried to the mesenchyme in sponges by
(A) Amoeboid cell
(B) Stipules
(C) Spicules
(D) Spines

Answer
Amoeboid cell

Red to orange pigments are
(A) Carotenes
(B) Carotenoids
(C) Xanthophylls
(D) Chlorophyll

Answer
Carotenes

Coelom is lined by
(A) Parietal mesoderm
(B) Visceral mesoderm
(C) Mesoderm
(D) Both A & B

Answer
Both A & B

In most triploblasts after embryonic development the three layers are represented as
(A) Separate layers of cells
(B) Structures formed from them
(C) Structures associated with them
(D) Their functions in body

Answer
Structures formed from them

Smallest disease causing agents in plants are ?
(A) virion
(B) mycoplasma
(C) viroids
(D) prions

Answer
viroids

In which of the following pigments major energy reserves and cell wall are like plants?
(A) Chlorophyta
(B) Rhodophyta
(C) Phaeophyta
(D) Chrysophyta

Answer
Chlorophyta

Body is globular in
(A) Cake urchin
(B) Sea Urchin
(C) Sea cucumber
(D) Brittle star

Answer
Sea Urchin

C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents
(A) Photosynthesis
(B) Aerobic respiration
(C) Anaerobic respiration
(D) Respiration

Answer
Aerobic respiration

Sex pill is formed in which of the following processes?
(A) Binary fission
(B) Mitosis
(C) Sexual reproduction
(D) Conjugation

Answer
Conjugation

Membranes of the grane are sites where?
(A) Oxygen is stored
(B) Food is stored
(C) Sunlight is trapped
(D) CO2 is stored

Answer
Sunlight is trapped

The structure which has been formed or modified from gill pouches in humans is
(A) Gills
(B) Eustachian tube
(C) Middle ear
(D) Lungs

Answer
Eustachian tube

Stomata open due to _________ of K+ into the guard cells from the surrounding epidermis
(A) Diffusion
(B) Active transport
(C) Osmosis
(D) All of these

Answer
Active transport

Cuticular transpiration is _____________ of total transpiration?
(A) 1-2%
(B) 3-4%
(C) 5-7%
(D) 90%

Answer
5-7%

The productivity of aquatic ecosystem is basically determined by light and
(A) CO2
(B) O2
(C) Water
(D) Nutrients

Answer
Nutrients

The productivity of aquatic ecosystem is basically determined by light and
(A) CO2
(B) O2
(C) Water
(D) Nutrients

Answer
Nutrients

The major cell infected by the HIV is lymphocyte ?
(A) helper-T
(B) helper-B
(C) Both T and B
(D) None of these

Answer
helper-T

Lenticels look like
(A) A big pore
(B) Stoma
(C) Sponge
(D) Cars or small protusions

Answer
Cars or small protusions

Protein subunits of capsid is called the capsomeres is a characteristic of each virus. Their number in Herpes virus is
(A) 162
(B) 1000
(C) 172
(D) 152

Answer
162

Simple breaking of mycelium resulting in formation of a new mycelium from each broken segments is called
(A) Sporing
(B) Conidiation
(C) Budding
(D) Fragmentation

Answer
Fragmentation

enzyme is
(A) bio catalyst
(B) hormone
(C) Gland
(D) None of these

Answer
bio catalyst

Scurvy and beri – beri and caused by the deficiency of
(A) Vitamin B and C
(B) Vitamin B and D
(C) Vitamin C and B
(D) Vitamin A and B

Answer
Vitamin C and B

Light reaction takes place on/in
(A) Thylakoid
(B) Storma
(C) Chloroplast
(D) Grana

Answer
Grana

The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by_
(A) Environmental biologist
(B) Paleontologist
(C) Marine biologist
(D) Social biologist

Answer
Paleontologist

PS I has chlorophyll a molecule which absorbs maximum light of _________ nm ?
(A) 600
(B) 650
(C) 680
(D) 700

Answer
700

How many carbon atoms are required to form a furan ring (ribofuranose)
(A) 3
(B) 4
(C) 5
(D) 2

Answer
4

Of the following, which one is missing in herbivores
(A) Premolars
(B) Canines
(C) Incisors
(D) Molars

Answer
Canines

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