Please refer to Chapter 2 Biological Classification MCQ Class 11 Biology with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 11 Biology. Students should refer to MCQ Questions for Class 11 Biology with Answers to score more marks in Grade 11 Biology exams. Students should read the chapter Biological Classification and then attempt the following objective questions.

MCQ Questions Class 11 Biology Chapter 2 Biological Classification

Biological Classification MCQ Class 11 Biology provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.

Question. Match the columns and find the correct answer:

Column I	Column II
A. Streptomyces	1. Food poisoning
B. Rhizobium	2. Source antibiotics
C. Nitrosomonas	3. Nitrogen fixation
D. Acetobacter	4. Nitrification
	5. Vinegar synthesis

(a) A-2 B-3 C-4 D-5
(b) A-5 B-2 C-3 D-4
(c) A-2 B-3 C-1 D-5
(d) A-4 B-5 C-1 D-3

Question. Entamoeba coil causes:
(a) None
(b) Diarrhoea
(c) Dysentery
(d) Pyorrhoea

Question. Recurrence of high temperature in malaria at intervals is due to completion of:
(a) Exoerythrocytic schizogony
(b) Sporogony
(c) Gamogony
(d) Erythrocytic schizogony

Question. Which of the following can be used as bacteriological filter?
(a) Cymbella
(b) Batrachospermum
(c) Oscillatoria
(d) Gelidium

Question. Chief producers in oceans are
(a) Diatoms
(b) Desmids
(c) Archaebacteria
(d) All of these

Question. Acellular slime mould:
(a) Physarum
(b) Physarella
(c) Both of these
(d) None of these

Question. Amoeba is found in:
(a) Fresh water
(b) Marine water
(c) Dirty water
(d) All of these

Question. Slime mould is characterized by the presence of
(a) Elaters
(b) Pseudoelaters
(c) Capillitum
(d) Capitulum

Question. Longitudinal binary fission found in
(a) Euglena
(b) Plasmodium
(c) Planaria
(d) Paramecium

Question. Amoeba secretes digestive enzymes for hydrolysing:
(a) Protein
(b) Starch
(c) Fat
(d) All the above

Question. Multiple fission in Plasmodium is:
(a) Schizogony
(b) Sproulation
(c) Gamogamy
(d) None of the above

Question. Infective stage of Entamoeba histolytica is:
(a) Pre-cyst
(b) Tetranucleate cyst
(c) Uninucleate cyst
(d) Trophozoite

Question. Haemozoin formed in malaria is produced by:
(a) Globin part of haemoglobin
(b) Dead leucocytes
(c) Cryptozoites
(d) Heme of haemoglobin

Question. What is not connected with reproduction of protozoans?
(a) Cryptogamy
(b) Autogamy
(c) Schizogamy
(d) Conjugation

Question. Malarial parasite is:
(a) Polygenetic
(b) Monogenetic
(c) Digenetic
(d) Monomorphic

Question. Leishmania tropica produces:
(a) Oriental sores
(b) Kala-azar
(c) Dysentery
(d) Sleeping sickness

Question. During unfavourable conditions, the plasmodium differentiates to form fruiting bodies bearing spores at their tips. This group is
(a) Chrysophytes
(b) Dinoflagellates
(c) Slime moulds
(d) Protozoans

Question. The members of which of the following are litter decomposers?
(a) Deuteromycetes
(b) Ascomycetes
(c) Basidiomycetes
(d) Phycomycetes

Question. Match The following:

A. Leishmania donovani	1. Malaria
B. Wuchereria bancrofti	2. Amoebiasis
C. Trypanosoma gambiense	3. Kalaazar
D. Entamoeba histolytica	4. Sleeping sickness
	5. Filariasis

(a) A-3 B-4 C-5 D-1
(b) A-3 B-5 C-2 D-1
(c) A-4 B-3 C-2 D-1
(d) A-3 B-5 C-4 D-2

Question. Saprolegnea belongs to:
(a) Phycomycetes
(b) Ascomycetes
(c) Basidiomycetes
(d) Deuteromycetes

Question. Old name of Blue green algae:
(a) Cyanobacteria
(b) Myxophyceae
(c) Spectrum algae
(d) None of these

Question. Which of the following found in harsh habitat?
(a) Eubacteria
(b) Cyanobacteria
(c) Archaebacteria
(d) None of these

Question. Which of the pigment present in cyanobacteria?
(a) Chlorophyll ‘a’
(b) Chlorophyll ‘b’
(c) Chlorophyll ‘c’
(d) Xanthophylls

Question. Which of the following shows pendulum movement and fix atmospheric nitrogen?
(a) Nostoc
(b) Anabaena
(c) Oscillatoria
(d) Rhodospirillum

Question. Who is the Joker of plant kingdom?
(a) Mycoplasma
(b) Chlorella
(c) Chlamydomonas
(d) Spirullina

Question. Plasmids was given by
(a) Tatum
(b) Lederberg
(c) Zinder
(d) Griffith

Question. O₂ does not evolve in the photosynthesis of
(a) BGA
(b) Green algae
(c) Bacteria
(d) Autotrophic plant

Question. The wall of bacteria consist of
(a) n – acetyl glucosamine
(b) n – acetyl muramic acid
(c) Both (a) & (b)
(d) Cellulose

Question. The folds of plasma membrane in bacterial cells are known as:
(a) Episomes
(b) Spherosomes
(c) Mesosomes
(d) Acrosomes

Question. Bacteria responsible for nitrificatin come under the following groups:
(a) Bacillus
(b) Vibrio
(c) Coccus
(d) Spirilla

Question. Bacteria were discovered by:
(a) Robert Koch
(b) A.V. Leeuwenhoek
(c) Robert Hooke
(d) Louis Pasteur

Question. The main difference in Gram (+)ve and Gram (-)ve bacteria resides in their:
(a) Flagella
(b) Cell membrane
(c) Cytoplasm
(d) Cell wall

Question. An obligate anaerobe is:
(a) Ulothrix
(b) Methane bacteria
(c) Spirogyra
(d) Onion

Question. Endospores develop in:
(a) Bacillus and Clostridium
(b) Saccharomyces and Clostridium
(c) Mnococcus and Clostridium
(d) Mucor and Bacillus

Question. Who divided the animals into 2 groups, those which had red blood and those that did not?
(a) Whittaker
(b) T.O. Diener
(c) Aristotle
(d) W.M. Stanley

Question. Which of the following shows extensive metabolic diversity?
(a) Humans
(b) Fungi
(c) Snakes
(d) Blue – green algae

Question. Four kingdom system of classification was proposed by:
(a) Whittaker
(b) Copeland
(c) Linnaeus
(d) Oswald Tippo

Question. Biochemical resemblances are used in the identification of:
(a) Protistan species
(b) Moneran species
(c) Fungal species
(d) Higher plants

Question. Which characteristic placed the fungi in a separate kingdom?
(a) Cell wall composition
(b) Cell wall structure
(c) Nutrition
(d) Nuclear membrane

Question. Which of the following are found in extreme saline conditions ?
(a) Archaebacteria
(b) Eubacteria
(c) Cyanobacteria
(d) Mycobacteria

Question. Which sentence is true for Bryophytes ?
(a) They are autotrophic
(b) vascular tissues are absent
(c) Fertilisation take place in the presence of water
(d) All of the three

Question. In which plant ,gametophytic phase is main and sporophytic phase is subsidiary.
(a) Bryophytes
(b) pteridophytes
(c) gymnosperms
(d) angiosperms

Question. After karyogamy followed by meiosis, spores are produced exogenously in:
(a) Agaricus
(b) Neurospora
(c) Alternaria
(d) Saccharomyces.

Question. Symbiotic relationship is found in ….
(a) Algae
(b) Fungi
(c) Bryophytes
(d) Lichens

Question. Plant of this group possess naked seed
(a) Pteridophytes
(b) Angiosperms
(c) Gymnosperms
(d) Bryophytes

Question. Which one of he following is wrong for fungi__________
(a) They are both unicellular and multicellular
(b) They are eukaryotic
(c) All fungi possess a purely cellulosic cell wall
(d) They are heterotrophic

Question. In lichens fungal component is known as …..
(a) Mycobiont
(b) phycobiont
(c) A & B
(d) none of these

Question. The plant cell without chloroplast is ….
(a) Algae
(b) Fungi
(c) Bryophytes
(d) Pteridophytes

Question. Pick up the wrong statement.
(a) Nuclear numbrane is present is Monera
(b) Cell wall is absent in Animalia
(c) Protista have photosynthetic and heterotrophic modes of nuuition
(d) Some fungi are edible

Question. The main structural component of virus is …
(a) nucleic acid
(b) protein
(c) nucleic acid and protein
(d) nucleic acid or protein

Question. Protista include…
(a) Paramecium, Euglena ,Dinoflagellates
(b) Hydra, Amoeba, Paramecium
(c) Yeast , Euglena, Dinoflagellates
(d) Mushroom, Paramecium, Euglena

Question. Ciliates differ from all other protozoans in__________
(a) Using pseudopodia for capturing prey
(b) Having a contractile vacuole for removing excess water
(c) Using flagella for locomotiono9
(d) Having two types of nuclei

Question. lyme disease is caused by members of __________
(a) Actnomycetes
(b) RicKickettsiae
(c) chlamydia
(d) Spirochaetes

Question. Virus have….
(a) DNA core,Lipid coat
(b) DNA or RNA core ,protein coat
(c) DNA or RNA core,plasma membrane
(d) DNA containing nucleus ,lipid envelope

Question. A virus contains
(a) DNA
(b) RNA
(c) DNA or RNA
(d) DNA and RNA

Question. Transverse section of bacterial flagellum shows which of the following patterns?
(a) Unistranded
(b) 9+2
(c) 1+0
(d) Multistranded

Question. Most widely used bioweapon is________
(a) Bacillus subtilis
(b) Pseudomonas putida
(C) Bacilus anthracis
(d) None of these

Question. Euglena is a predator of small organisms
(a) In presence of light
(b) Due to holopytic nutrition
(c) Due to mixotrophic nutrition
(d) ln absence of fight

Question. How many dikaryotic spore are formed on alternate host in the life cycle of puccinia gramunis tritic ?
(a) 4
(b) 2
(c) 1
(d) 3

Question. In Fungi reserved food materials are …..
(a) Glycogen and lipid droplets
(b) Starch
(c) Protein
(d) Lipid

Question. Study of lichens is called …..
(a) Algology
(b) Mycology
(c) Lichenology
(d) Cytology

Question. In Gram staining technique, the following chemicals are used ln this process. Find the correct sequence
(a) A-> B ->C
(b) C->B-> A
(c) B->C ->A
(d) B->A->C

Question. Who is the father of Taxonomy among the following
(a) Linnaeus
(b) Aristole
(c) Maheshwari
(d) Birbal sahani

Question. Halophiles is also called …..
(a) Eubacteria
(b) Actinomyce
(c) Cyanobacteria
(d ) Archaebacteria

Question. Protistans which are commonly known as Jewels of the plant Kingdom, slow movement by_______
(a) Mucilage propulsion
(b) Presence of high molecular weight lipids
(c) Osmoregulatory structure
(d) Isokont flagella

Question. Which of the following is mainly a mode of multiplication n bacteria ?
(a) Endospore formation
(b) Binary fission
(c) genetic recombinaton
(d) Parasexuality

Question. Viroids were discovered by …
(a) Diener
(b) Woese
(c) Pasteur
(d) Iyengar

Question. The name virus was given by …
(a) Ivanowsky
(b) Pasteur
(c) Diener
(d) Hershey

Question. protists have diverse mode of nutrition The type missing in protists is __________
(a) chemosynthetic
(b) Holozoic
(c) parasitic
(d) photosynthetic

Question. An example for symbiotic bacteria is______
(a) Erwinia amylovora
(b) Rhizobium leguminosarum
(c) Xanthomonas campestris
(d) Agrobacterium tumefaciens

Question. Antibiotic flavicin is obtained from________
(a) Aspergillus fumigatus
(b) A. elavatus
(c) Streptomyces griseus
(d) S. fradiae

Question. The athlete’s foot disease in humans is caused due to________
(a) bacteria
(b) fungi
(c) virus
(d) none of the above

Question. Which of the following is a viral disease_________
(a) Red rot of sugarcane
(b) Leaf roll of potato
(c) Wilt of cabbage
(d) Damping off disease

Question. By how many criteria ,living organisms have been classified into five kingdom.
(a) Two
(b) Four
(c) five
(d) Three

Question. Prokaryotes are included in the kingdom ….
(a) Monera
(b) Protista
(c) Protozoa
(d) Basidiomycetes

Question. Species belonging to which of the following kingdoms can convert ammonia to nitrite and nitrite to nitrate?
(a) Monera
(b) Algae
(c) Protista
(d) Protista

Question. Plant body of acellular slime mold_______
(a) Is multicellular
(b) Has cellulosic cell wall
(c) Is pseudoplasmodium
(d) Is coenocytic

Question. Some bacteria thrive in extreme environment conditions such as absence of oxygen,high salt concentration, high temperature and acidic pH .Name them…
(a) Cyanobacteria
(b) Eubacteria
(c ) Archaebacteria
(d) Streptococcus

Question. All the bacteria fix nitrogen except …
(a) Rhizobium
(b) E Coli
(c) Azotobacter
(d) Cyanobacteria

Question. Influenza virus contains_________
(a) RNA
(b) DNA
(c) Both DNA and RNA
(d) None of these

Question. Which of the following organisms can be found in extreme saline conditions?
(a) Eubacteria
(b) Archaebacteria
(c) Cyanobacteria
(d) Mycobacteria

Question. ICBN stands for _______.
(a) International Code of Botanical Nomenclature
(b) Indian Code of Botanical Nomenclature
(c) Indian Congress of Biological names
(d) Indian Congress of Botanical Nomenclature

Question. Phylogenetic classification is based on _______.
(a) Overall similarities
(b) Habit of plants
(c) Common evolutionary descendants
(d) All of these

Question. The region where bacterial genome resides is termed as
(a) Nucleus
(b) Cytoplasma
(c) Nucleoid
(d) Ribosome free region

Question. Which of the following is included in five kingdom classification .
(a) Monera, Protista, Animalia, Plantae, Algae
(b) Monera, Protista, Fungi, Animalia, Plantae
(c) Virus, prokaryotes, Fungi, Plantae, Animalia
(d) Algae, Fungi, Bryophyta, Pteridophyta, Gymnosperms

Question. The study of fungi is …
(a) Cytology
(b) Mycology
(c) Virology
(d) Algology

Question. Fungus cell wall is made up of…..
(a) Cellulose
(b) Protein
(c) Chitin
(d) carbohydrates

Question. Fungi which grow in dung are termed as
(a) Caprophilous
(b) Tericolous
(c) Sacxicolous
(d) Saxiphilous

Question. All fungi are
(a) Autotrophs
(b) Saprotrophs
(c) Heterotrophs
(d) Parasites

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