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Biology Online Quizzes
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Biology Quiz Test 02
Number of pairs of cranial nerves is
(A) 10
(B) 11
(C) 12
(D) 13
Reverse transcriptase is present in
(A) All RNA viruses
(B) All DNA viruses
(C) All retroviruses
(D) All viruses
The bond formed when two or more atoms complete their electron shells by sharing electrons is called
(A) Ionic bond
(B) Hydrogen bond
(C) Covalent bond
(D) Electrovalent bond
Of the following which one has glassy shells
(A) Radiolarians
(B) Forams
(C) Both of these
(D) None of these
Breaking of terminal phosphate of ATP releases about ___________ Kcal of energy?
(A) 6.1
(B) 6.3
(C) 7.1
(D) 7.3
Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of
(A) Chemotropic movement
(B) Chemotactic movement
(C) Chemosastic movement
(D) Haptonastic movement
Bats & humming birds belong to
(A) Endotherms
(B) Ectotherms
(C) Heterotherms
(D) Homeotherms
Stomatal transpiration is __________ of total transpiration
(A) 90%
(B) 91%
(C) 93%
(D) 95%
Antherozoids the male gamete in bryophytes are attracted towards Archegonium i.e. female sex organ by
(A) Phototactic phenomenon
(B) Chemotactic phenomenon
(C) Geotropic phenomenon
(D) Chemotropic movement
Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by
(A) Ribosomes
(B) Cytoplasm
(C) Golgi apparatus
(D) Endoplasmic reticulum
Malaria is associated with
(A) Culex Mosquito
(B) Culiesta Mosquito
(C) Anopheles Mosquito
(D) Culex & Anopheles Mosquito
An insulin molecule consists of _________ polypeptide chains?
(A) 1
(B) 2
(C) 3
(D) 4
All such fungi in which sexual phase has not been observed are present in
(A) Zygomycota
(B) Ascomycota
(C) Basidiomycota
(D) Deuteromycota
All such fungi in which sexual phase has not been observed are present in
(A) Zygomycota
(B) Ascomycota
(C) Basidiomycota
(D) Deuteromycota
Enzyme present in the saliva is
(A) lipase
(B) trypsin
(C) ptyalin
(D) invertase
Which Country holds the Presidency of European council from January 1, 2021?
(A) France
(B) Belgium
(C) Italy
(D) Spain
People living in high altitudes (like mountains) usually have a
(A) Smaller Number Of White Blood Cells
(B) Smaller Number Of Red Blood Cells
(C) Larger Number Of Red Blood Cells
(D) Larger Number Of White Blood Cells
The average adult has a blood volume of about ________ liters
(A) 5
(B) 5.5
(C) 6
(D) 6.5
The average internal temperature of human body is
(A) 35 °C
(B) 36 °C
(C) 37 °C
(D) 38 °C
Vitamin ________ is needed for the formation of a light-sensitive pigment in the retina
(A) A
(B) C
(C) D
(D) B Complex
About ________ of the body weight of a mammal is water
(A) 60%
(B) 65%
(C) 70%
(D) 70%
On wound ________ fight foreign particles, like bacteria
(A) White Blood Cells
(B) Red Blood Cells
(C) Platelets
(D) Plasma
Blood is carried towards the heart by
(A) Arteries
(B) Capillaries
(C) Veins
(D) None of these
_____ is essential for the formation of haemoglobin
(A) Calcium
(B) Iron
(C) Water
(D) Iron
______ are needed as a source of energy for the vital activities of the body.
(A) Calcium
(B) Iron
(C) Water
(D) Carbohydrates
Starch is converted into maltose by
(A) Diastase
(B) Invertase
(C) Maltase
(D) Amylase
Co-enzyme is often formed from
(A) Lipid
(B) Protein
(C) Inorganic Ion
(D) Vitamin
Messenger RNA is formed in
(A) Nucleus
(B) Chloroplast
(C) Mitochondria
(D) None Of These
Number of chromosomes in E.coli
(A) 4
(B) 6
(C) 3
(D) 1
Protein factory is
(A) Nucleus
(B) Ribosome
(C) Golgi Complex
(D) Centriole
Pigment present in red algae is
(A) Fucoxanthin
(B) Phycocyanin
(C) Phycoerythrin
(D) Bilirubin
Nutrition in fungi is
(A) Photosynthetic
(B) Chemosynthetic
(C) Completely Parasitic
(D) Absorptive Heterotrophs
Fungi resemble plants because they lack
(A) Cell Wall
(B) Cytoplasm
(C) Centriole
(D) Nucleus
Which is a parasitic plant?
(A) Cuscuta
(B) Rose
(C) Ferns
(D) Mosses
True roots absent in
(A) Ferns
(B) Bryophytes
(C) Gymnosperms
(D) Angiosperms
The mechanism for ATP synthesis is
(A) Chemosynthesis
(B) Photosynthesis
(C) Phosphorylation
(D) Chemiosmosis
Enzyme present in the saliva is
(A) Lipase
(B) Trypsin
(C) Ptyalin
(D) Invertase
Nitrogen is present in
(A) Carbohydrates
(B) Proteins
(C) Lipids
(D) Carbonates
Operculum is present in
(A) Bony Fish
(B) Sea Fish
(C) Cartilaginous Fish
(D) None of these
In which animal respiratory surface are found in more than one organ
(A) Birds
(B) Human
(C) Fish
(D) Frog
The heart is enclosed in a membrane called
(A) Pleura
(B) Pericardium
(C) Peritoneum
(D) Epithelium
From right ventricle blood is pushed into
(A) Pulmonary Trunk
(B) Brain
(C) Aorta
(D) Body
Jaws without teeth are found in found in
(A) Birds
(B) Reptiles
(C) Fish
(D) None of these
Male reproductive part of flower is
(A) Stigma
(B) Stamen
(C) Carpel
(D) Ovule
Coordination in plants is by
(A) Nervous System
(B) Enzymes
(C) Hormones
(D) Roots
The simplest fatty acid is
(A) Palmitic Acid
(B) Butyric Acid
(C) Oleic Acid
(D) Acetic Acid
All enzymes are protein which are
(A) Globular
(B) Fibrous
(C) Helical
(D) None of these
Which of the following disease is not caused by virus
(A) T.B
(B) AIDS
(C) HIV
(D) Flu
Which of the following is a filamentous alga
(A) Ulva
(B) Chlorella
(C) Acetabularia
(D) Spirogyra
Which of the following is not sac fungi
(A) Truffles
(B) Yeasts
(C) Mushrooms
(D) Morels
Cassia fistula is the scientific name of
(A) Amaltas
(B) Rose
(C) Onion
(D) Tomato
Phage virus consists of head and
(A) Thorax
(B) Neck
(C) Tail
(D) None of these
Bacteria without any flagella are called
(A) Monotrichous
(B) Atrichous
(C) Peritrichous
(D) Lophotrichous
Protists have been evolved from
(A) Animals
(B) Plants
(C) Fungi
(D) Prokaryotes
Algae differ from plants in that the sex organs in algae are
(A) Multicellular
(B) Unicellular
(C) Acellular
(D) None of these
Fungi can absorb food from the substrate because the have
(A) Sporangium
(B) Spores
(C) Rhizoids
(D) Stalk
A seed may be defined as a fertilized
(A) Egg
(B) Ovary
(C) Ovule
(D) Embryo
Platyhelminthes means
(A) Round Worms
(B) Flat Worms
(C) Tape Worms
(D) Pin Worms
The first land vertebrates were
(A) Dipnoi
(B) Amphibia
(C) Reptilia
(D) Aves
Recombinant DNA is introduced in to host cell by means of
(A) Phage
(B) Vector
(C) Bacteria
(D) Enzyme
In cystic fibrosis, the patient lacks a gene that codes for trans-membarene carrier of
(A) Sodium Ion
(B) Carbon Dioxide
(C) Chloride Ion
(D) Potassium Ion
Which gene is located on linkage group number 11 in man
(A) Sickle Cell Anemia
(B) Leukemia
(C) Albinism
(D) All Of These
In birds the sex is determined by the type of
(A) Sperm
(B) Autosomes
(C) Egg
(D) None of these
In RNA nucleotides are attached by
(A) Peptide Bonds
(B) Hydrogen Bonds
(C) Covalent Bond
(D) Phosphodiester Bond
The chromosome is
(A) Gene
(B) Genes + Protein
(C) DNA + Genes
(D) Gene + Protein
The human body contains water
(A) 60-80%
(B) 70-90%
(C) 75-95%
(D) 80-90%
Environment is a source of
(A) Food
(B) Shelter
(C) Clothing
(D) All of the above
Fresh water ecosystem covers
(A) 2%
(B) 1%
(C) 3%
(D) 5%
Foul smell in lake is produced by
(A) Algae
(B) Bacteria
(C) Fungi
(D) All Of These
Starch is richly present in
(A) Onion
(B) Apple
(C) Cereals
(D) Tomato
Plants having foreign DNA are known as
(A) Genetic Plants
(B) Recombinant Plants
(C) Cultured Plants
(D) Transgenic Plants
Which of the following kinds of atom do not occur in carbohydrates
(A) Carbon
(B) Hydrogen
(C) Nitrogen
(D) Oxygen
The basic framework of all types of membranes are
(A) Lipoproteins
(B) Glycoproteins
(C) Proteoglycans
(D) Nucleoproteins
Single membrane bounded organelle is
(A) Nucleus
(B) Lysosome
(C) Ribosome
(D) None of these
Irregular grape like cluster of bacilli is called
(A) Diplo Bacilli
(B) Strepto Bacilli
(C) Staphylo Bacilli
(D) None of these
It is generally accepted that plants arose from ancestral
(A) Green Algae
(B) Fungi
(C) Bacteria
(D) All Of These
Main energy reserves in the case of green algae are
(A) Glycogen
(B) Sucrose
(C) Glucose
(D) Starch
The chief component of the cell wall of the majority of fungi is
(A) Pectin
(B) Chitin
(C) Lignin
(D) Cellulose
After pollination the pollens are transferred to which part of the flower
(A) Ovary
(B) Style
(C) Stigma
(D) None of these
Glyoxisomes contain enzymes for
(A) Glyoxylate Cycle
(B) Glycolate Cycle
(C) Calvin Cycle
(D) None of these
Vacuoles serve to
(A) Expand The Plant Cells
(B) Sites For Storage
(C) Both In Expansion And Storage
(D) Non-Specific Function
An isolated virus is not considered living since it
(A) Separate Into Two Parts
(B) Cannot Metabolize
(C) Rapidly Looses Its Genome
(D) None of these
The predominant phycobilin pigment in cyanobacteria which is of blue colour is
(A) Phycoerythrin
(B) Phycocyanin
(C) Fucocyanin
(D) Fucoxanthin
Deafness is caused by misuse of
(A) Penicillin
(B) Tetracycline
(C) Paracetamol
(D) Streptomycin
Cell envelope does not include
(A) Capsule
(B) Slime Layer
(C) Cell Wall
(D) Cell Membrane
Coenocytes is a fungal body which is
(A) Multi-Nucleate Aseptate
(B) Multi-Nucleate Septate
(C) Uni-Nucleate Septate
(D) Uni-Nucleate Aseptate
Bryophytes are
(A) All Heterosporous
(B) All Homosporous
(C) Mostly Homosporus
(D) None of these
Nephridia are excretory organs in
(A) Round Worms
(B) Lizard
(C) Earth Worm
(D) Planaria
Which one is harmful mollusk
(A) Slug
(B) Snail
(C) Oyester
(D) Star Fish
Which structure is involve in gaseous exchange of plants
(A) Stomata
(B) Lenticels
(C) Cuticle
(D) All Of These
A common feature of the human and insect trachea is
(A) Non-Collapsible Wall
(B) Supporting Rings
(C) Ectodermal Origin
(D) Endodermal Origin
Vomiting occurs due to
(A) Constipation
(B) Diarrhea
(C) Antiperistalsis
(D) Peristalsis
Photosynthetic prokaryotes lack
(A) Ribosomes
(B) Chloroplast
(C) Cell-Membrane
(D) Vacuole
The scientific name of jelly fish is
(A) Aurelia
(B) Madrepore
(C) Actinia
(D) Obelia
In which plants leaves are always in whorls
(A) Lycopsids
(B) Psilopsids
(C) Sphenopsids
(D) Pteropsids
In bacterial and viral infection, their is increase in number of
(A) Platelets
(B) RBC’s
(C) Antibodies
(D) WBC’s
In plants, which are involved in testa formation
(A) Tracheids
(B) Sclereids
(C) Sclerenchyma
(D) None Of These
The etiolated plants lack
(A) Chlorophyll
(B) Xanthophyll
(C) Caroteins
(D) None of these
Highly intelligent mammals are
(A) Rat
(B) Bat
(C) Dolphin
(D) Elephant
Plants absorb most part of water needed by them through their
(A) Stem
(B) Root Hairs
(C) Leaf
(D) Bark