CBSE Class 11 Biology Biological Classification Worksheet

Important Questions for NCERT Class 11 Biology Biological Classification

Question. Viruses have
(a) DNA enclosed in a protein coat
(b) prokaryotic nucleus
(c) single chromosome
(d) both DNA and RNA. 
Answer. A

Question. Which statement is wrong for viruses?
(a) All are parasites.
(b) All of them have helical symmetry.
(c) They have ability to synthesize nucleic acids and proteins.
(d) Antibiotics have no effect on them. 
Answer. B

Question. Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?
(a) Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
(b) Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan.
(c) Yeast used in making bread and beer is a fungus.
(d) Nostoc and Anabaena are examples of protista.
Answer. C

Question. Virus envelope is known as
(a) capsid             
(b) virion
(c) nucleoprotein   
(d) core.
Answer. A

Question. T.O. Diener discovered a
(a) free infectious DNA     
 (b) infectious protein
(c) bacteriophage             
(d) free infectious RNA.
Answer. D

Question. There exists a close association between the alga and the fungus within a lichen. The fungus
(a) provides protection, anchorage and absorption for the algae
(b) provides food for the alga
(c) fixes the atmospheric nitrogen for the alga
(d) releases oxygen for the alga. 
Answer. A

Question. Which of the following statements is not true for retroviruses?
(a) DNA is not present at any stage in the life cycle of retroviruses.
(b) Retroviruses carry gene for RNA-dependent
(c) The genetic material in mature retroviruses is RNA.
(d) Retroviruses are causative agents for certain kinds of cancer in man. 
Answer. A

Question. Viruses that infect bacteria multiply and cause their lysis, are called
(a) lysozymes         
(b) lipolytic
(c) lytic               
 (d) lysogenic.
Answer. C

Question. Lichens are well known combination of an alga and a fungus where fungus has
(a) a saprophytic relationship with the alga
(b) an epiphytic relationship with the alga
(c) a parasitic relationship with alga
(d) a symbiotic relationship with alga.
Answer. D

Question. Which one of the following statements about viruses is correct ?
(a) Viruses possess their own metabolic system.
(b) All viruses contain both RNA and DNA.
(c) Viruses are obligate parasites.
(d) Nucleic acid of viruses is known as capsid.
Answer. C

Question. Tobacco mosaic virus is a tubular filament of size
(a) 300 × 10 nm     
(b) 300 × 5 nm
(c) 300 × 20 nm     
(d) 700 × 30 nm. 
Answer. C

Question. Viruses are no more “alive” than isolatedchromosomes because
(a) they require both RNA and DNA
(b) they both need food molecules
(c) they both require oxygen for respiration
(d) both require the environment of a cell to replicate. 
Answer. D

Ques. Cauliflower mosaic virus contains
(a) ss RNA       
(b) ds RNA
(c) ds DNA     
 (d) ss DNA
Answer. C

Question. Viruses possess
(a) ribosomes to synthesize protein
(b) organelle for its vital mechanism
(c) either DNA or RNA
(d) none of these. 
Answer. C

Question. Most of the lichens consist of
(a) green algae and ascomycetes
(b) brown algae and higher plant
(c) blue green algae and basidiomycetes
(d) red algae and ascomycetes. 
Answer. A

Question. What is the genetic material in influenza virus?
(a) Double helical DNA     
(b) RNA
(c) Single helix DNA           
(d) None of these 
Answer. B

Question. Which one of the following statement about lichens is wrong?
(a) These grow very rapidly (2 cm per day).
(b) They show fungal and algal symbiotic relationships.
(c) Some of its species are eaten by reindeers.
(d) These are pollution indicators. 
Answer. A

Question. The tailed bacteriophages are
(a) motile on surface of bacteria
(b) non-motile
(c) motile on surface of plant leaves
(d) actively motile in water. 
Answer. A

Question. Tobacco mosaic virus (TMV) genes are
(a) single stranded RNA
(b) double stranded DNA
(c) proteinaceous
(d) double stranded RNA. 
Answer. A

Question. Organisms which are indicator of SO2 pollution of air
(a) mosses           
(b) lichens
(c) mushrooms     
(d) puffballs. 
Answer. B

Question. Lichens indicate SO2 pollution because they
(a) show association between algae and fungi
(b) grow faster than others
(c) are sensitive to SO2
(d) flourish in SO2 rich environment.
Answer. C

Question. Who proposed two kingdom system of classification and named kingdom as Plantae and Animalia?
(a) CarlWoese
(b) RHWhittaker
(c) Carolus Linnaeus
(d) Herbert Copeland
Answer. C

Question. Which of the following statements given below is correct?
(a) Biological classification is the scientific ordering of organisms in a hierarchial series of groups on the basis of their relationships, i.e. morphological, evolutionary and others
(b) Whittaker classified organisms on the basis of autotrophic and heterotrophic mode of nutrition
(c) In five kingdom system of classification, living organisms can be divided into prokaryotic and eukaryotic cells on the basis of cell structure
(d) All of the above
Answer. D

Question. Which of the following characters served as the criteria for five kingdom system of classification proposed by Whittaker?
(a) Cell structure
(b) Body organisation and mode of nutrition
(c) Reproduction and phylogenetic relationships
(d) All of the above
Answer. D

Question. In Whittaker’s system of classification,prokaryotes are placed in the kingdom
(a) Plantae
(b) Protista
(c) Monera
(d) Animalia
Answer. C

Question. In the five kingdom classification,Chlamydomonas and Chlorella are included in
(a) Plantae
(b) Algae
(c) Protista
(d) Monera
Answer. A

Question.Consider the following statements with respect to characteristic features of the kingdom.
I. In Animalia, the mode of nutrition is autotrophic.
II. In Monera, the nuclear membrane is present.
III. In Protista, the cell type is prokaryotic.
IV. In Plantae, the cell wall is present.
Which of the above statements is/are correct?
(a) Only I
(b) Only II
(c) Only III
(d) Only IV
Answer. D

Question. Bacteria are grouped under four categories based on their shape. Refer to the given figure. Identify A, B, C and D.

(a) A–Vibrio, B–Cocci, C–Bacilli, D–Spirilla
(b) A–Cocci, B–Bacilli, C–Spirilla, D–Vibrio
(c) A–Bacilli, B–Spirilla, C–Vibrio, D–Cocci
(d) A–Spirilla, B–Vibrio, C–Cocci, D–Bacilli
Answer. B

Question.  Match the following columns.
Column I               Column II
(Names)              (Shape)
A. Coccus            1. Rod-shaped
B. Bacillus           2. Spherical
C. Vibrio             3. Spiral-shaped
D. Spirillum        4. Comma-shaped
Codes
     A B C D
(a) 3 2 1 4
(b) 4 3 2 1
(c) 2 1 4 3
(d) 1 4 3 2
Answer. C

Question. Some bacteria thrive in extreme environmental conditions such as the absence of oxygen, high salt concentration, high temperature and acidic pH. Identify the type of bacteria.
(a) Cyanobacteria
(b) Eubacteria
(c) Archaebacteria
(d) Mycobacteria
Answer. C

Question. Methanogens belong to
(a) Eubacteria
(b) Archaebacteria
(c) dinoflagellates
(d) slime moulds
Answer. B

Question. The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the
(a) thermoacidophiles
(b) methanogens
(c) Eubacteria
(d) halophiles
Answer. B

Question. Match the following columns.
Column I                          Column II
A. Halophiles                 1. Aquatic environment
B. Thermoacidophiles     2. Gut of ruminant
C. Methanogens             3. In hot springs
D. Cyanobacteria           4. Salty areas
Codes
     A B C D
(a) 1 4 3 2
(b) 3 2 1 4
(c) 2 1 4 3
(d) 4 3 2 1
Answer. D

Question. Eubacteria include
(a) blue-green algae and bacteria
(b) Archaebacteria and blue-green algae
(c) cyanobacteria and eukaryotes
(d) bacteria and eukaryotes
Answer. A

Question. The cyanobacteria are also referred to as
(a) protists
(b) golden algae
(c) slime moulds
(d) blue-green algae
Answer. D

Question. Given figure is of a filamentous blue-green algae. Identify the algae and choose the option that is correct for A, B and C in the figure.

(a) A–Gelidium, B–Vegetative cell,C–Heterocyst
(b) A–Volvox, B–Somatic cell,C–Mucilaginous sheath
(c) A–Chara, B–Mucilaginous sheath,C–Heterocyst
(d) A–Nostoc, B–Heterocyst,C–Mucilaginous sheath
Answer. D

Question. Which of the following bacteria plays an important role in the recycling of nutrients like nitrogen, phosphorus, iron and sulphur?
(a) Chemoheterotrophic bacteria
(b) Chemosynthetic autotrophic bacteria
(c) Parasitic bacteria
(d) Saprophytic bacteria
Answer. B

Question. Mostly found bacteria are
(a) chemosynthetic bacteria
(b) heterotrophic bacteria
(c) heterotrophic decomposers
(d) saprophytic bacteria
Answer. C

Question. Some of the cyanobacteria can fix atmospheric nitrogen in their specialised cells called
(a) akinetes
(b) heterocyst
(c) endospores
(d) homocyst
Answer. B

Question. Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?
(a) Bacillus
(b) Pseudomonas
(c) Mycoplasma
(d) Nostoc
Answer. C

Question. Protists are eukaryotic and the mode of nutrition is both autotrophic and heterotrophic. The given statement is
(a) True
(b) False
(c) Cannot say
(d) Partially true or false
Answer. A

Question. Which of the following kingdoms have not well-defined boundaries?
(a) Plantae
(b) Protista
(c) Monera
(d) Algae
Answer. B

Question. Members of Protista are primarily
(a) terrestrial
(b) aquatic
(c) pathogenic
(d) photosynthetic
Answer. B

Question. Chrysophytes, euglenoids,dinoflagellates and slime moulds are included in the kingdom
(a) Protista
(b) Fungi
(c) Animalia
(d) Monera
Answer. A

Question. Which one of the following is a characteristic feature of group-Chrysophyta?
(a) They are parasitic forms which cause disease in animals
(b) They have a protein rich layer called pellicle
(c) They form diatomaceous earth on the sea floors
(d) They are commonly called dinoflagellates
Answer. C

Question. Which of the following organisms are known as chief producers in the oceans?
(a) Cyanobacteria
(b) Diatoms
(c) Dinoflagellates
(d) Euglenoids
Answer. B

Question. Which of the following groups of organisms is/are placed under the group–Chrysophyta?
(a) Diatoms only
(b) Desmids only
(c) Diatoms and golden algae
(d) Desmids and Paramecium
Answer. C

Question.  In which of the following groups, the cell wall has stiff cellulosic plate on the outer surface?
(a) Diatoms
(b) Red algae
(c) Dinoflagellates
(d) Slime moulds
Answer. C

Question. Which group of organisms is represented by the given figure?

(a) Dinoflagellates
(b) Protozoans
(c) Slime mould
(d) Euglenoids
Answer. D

Question. Which of the following statements about Euglena is true?
(a) Euglenoids bear flagella
(b) Euglena when placed in continuous darkness, loose their photosynthetic activity and die
(c) The pigments of Euglena are quite different from those of green plants
(d) Euglena is a marine protist
Answer. A

Question. Which one of the following is a saprophytic protist?
(a) Desmid
(b) Slime mould
(c) Euglena
(d) Nostoc
Answer. B

Question. Under favourable conditions slime moulds form
(a) protonema
(b) Plasmodium
(c) mycelium
(d) fruiting bodies
Answer. B

Question. Protozoans are divided into ………groups. Most suitable word to fill the blank is
(a) three
(b) four
(c) two
(d) eight
Answer. B

Question. Consider the following statements about amoeboid protozoans.
I. They live in freshwater, sea water or moist soil.
II. They have pseudopodia for locomotion and capturing prey.
III. They have silica shells on their surface in marine forms.
IV. Their body is covered by plasmalemma.
Which of the statements given above are correct?
(a) I and II
(b) III and IV
(c) II and III
(d) I, II, III and IV
Answer. D

Question. Which of the following is a flagellated protozoan?
(a) Amoeba
(b) Entamoeba
(c) Plasmodium
(d) Trypanosoma
Answer. D

Question. Ciliates differ from all other protozoans in
(a) using flagella for locomotion
(b) having two types of nuclei
(c) using pseudopodia for capturing prey
(d) having a contractile vacuole for removing excess water
Answer. B

Question. Which of the following groups always produce an infectious spore-like stage in their life cycle?
(a) Amoeboid protozoans
(b) Ciliated protozoans
(c) Flagellated protozoans
(d) Sporozoans
Answer. D

Question. Match the following columns.
      Column I               Column II
A. Chrysophytes        1. Gonyaulax
B. Dinoflagellates      2. Euglena
C. Euglenoids            3. Diatoms
D. Slime moulds        4. Plasmodium
Codes
     A B C D
(a) 1 3 2 4
(b) 1 4 2 3
(c) 3 2 4 1
(d) 3 1 2 4
Answer. D

Question. The cells of the body of a multicellular fungus are organised into rapidly growing individual filament called
(a) mycelium
(b) rhizoids
(c) hyphae
(d) lichens
Answer. C

Question. Cell wall of fungi is composed of
(a) chitin
(b) pectin
(c) cellulose
(d) mannans
Answer. A

Question. Match the following columns.
    Column I          Column II
A. Saprophyte     1. Symbiotic association of fungi with plant roots
B. Parasite          2. Decomposition of dead organic materials
C. Lichens          3. Grow on living plants or animals
D. Mycorrhiza     4. Symbiotic association of algae and fungi
Codes
A B C D
(a) 1 2 3 4
(b) 3 2 1 4
(c) 2 1 3 4
(d) 2 3 4 1
Answer. D

Question. In fungi, the fusion of protoplasms between two motile or non-motile gametes is called
(a) plasmogamy
(b) plasmokinesis
(c) karyogamy
(d) cytokinesis
Answer. A

Question. With respect to fungal sexual cycle,choose the correct sequence of events.
(a) Karyogamy, Plasmogamy and Meiosis
(b) Meiosis, Plasmogamy and Karyogamy
(c) Plasmogamy, Karyogamy and Meiosis
(d) Meiosis, Karyogamy and Plasmogamy
Answer. C

Question. Which of the following classes consists of coenocytic, multinucleate and aseptate mycelium?
(a) Basidiomycetes
(b) Ascomycetes
(c) Phycomycetes
(d) Deuteromycetes
Answer. C

Question. Read the following statements about sexual reproduction in Phycomycetes.
I. In class-Phycomycetes, sexual reproduction produces a resting diploid spore called zygospore.
II. Zygospores are formed by the fusion of two gametes.
III. The gametes are either isogamous or anisogamous.
IV. Based on the mode of sexual reproduction, Phycomycetes are divided into two groups, viz.
Oomycetes and Zygomycetes.
Which of the following statements given above are correct?
(a) I and II
(b) III and IV
(c) I and III
(d) I, II, III and IV
Answer. D

Question. Members of Ascomycetes are decomposers, parasitic/coprophilous and saprophytic.
(a) True
(b) False
(c) Cannot say
(d) Partially true or false
Answer. A

Question. In Basidiomycetes, the vegetative reproduction takes place by
(a) endospore
(b) conidia
(c) akinetes
(d) fragmentation
Answer. D

Question. Deuteromycetes are known as fungi imperfecti because
(a) their zygote undergoes meroblastic and holoblastic cleavage
(b) only asexual stages are known
(c) they have aseptate mycelium
(d) they are autotrophic
Answer. B

Question. Which one of the following matches is correct?
(a) Phytophthora Aseptate mycelium Basidiomycetes
(b) Alternaria Sexual reproduction absent Deuteromycetes
(c) Mucor Reproduction by conjugation Ascomycetes
(d) Agaricus Parasitic fungus Basidiomycetes
Answer. B

Question. Match the following columns.
Column I                    Column II
(Categories)            (Common names)
A. Phycomycetes       1. Algal fungi
B. Ascomycetes         2. Imperfect fungi
C. Basidiomycetes     3. Bracket fungi
D. Deuteromycetes    4. Sac fungi
Codes
     A B C D
(a) 2 1 4 3
(b) 4 3 2 1
(c) 1 4 3 2
(d) 3 2 1 4
Answer. C

Question. Find the incorrect match.
(a) Albugo – Downy mildew
(b) Alternaria – Early blight of potato
(c) Colletotrichum falcatum – Red rot of sugarcane
(d) Phytophthora infestans – Late blight of potato
Answer. A

Question. Hyphae of parasitic fungi is able to penetrate the hard cell wall of its host with the help of
(a) enzymes
(b) hormones
(c) sharp tips
(d) sugar exudates
Answer. A

Question. Which statement stands true for fungi?
(a) They are chlorophyllous
(b) They never form spores
(c) Ectoparasites are non-pathogen
(d) Reproduce both sexually and asexually
Answer. D

Question. Which of the following statements is false for ascomycetes?
(a) Ascomycetes consist of variously pigmented moulds
(b) Thallus of Ascomycetes has aseptate, unbranched hyphae
(c) In Ascobolous sexual reproduction occurs by spermatisation
(d) Process of karyogamy is delayed to start dikaryophase
Answer. B

Question. Fungus producing eight spores in a sac belongs to
(a) Phycomycetes
(b) Ascomycetes
(c) Basidiomycetes
(d) Deuteromycetes
Answer. B

Question. Read the following statements and choose from the options which one(s) is/are true.
I. Lichens constitute just 5% of algal component.
II. Mycobiont is involved in attachment to substratum.
III. Reproduction in case of lichens may by vegetative or sexual.
Codes
(a) I, II and III
(b) I and II
(c) Only II
(d) II and III
Answer. A

Question. Find the correctly matched pair regarding lichens.
(a) Usnea – Usnic acid
(b) Parmelia – Curing epilepsy
(c) Lobaria – Lung disease
(d) All of the above
Answer. D

Question. The term ‘virus’ implies to
(a) cellular
(b) pathogen
(c) parasite
(d) venom or poisonous fluid
Answer. D

Question. Viruses are non-cellular organisms, but replicate themselves once they infect the host cell. To which of the following kindgom viruses belong to?
(a) Monera
(b) Protista
(c) Fungi
(d) None of these
Answer. D

Question. The non-living characteristic of viruses is ability of crystallisation.
(a) True
(b) False
(c) Cannot say
(d) Partially true or false
Answer. A

Question. Observe the diagram and name all the three A, B and C (name of the virus) in correct order.

(a) A-RNA, B-Capsid, C-Tobaccomosaic virus
(b) A-DNA, B-Capsid, C-Bacteriophage
(c) A-RNA, B-Capsomere, C-TMV
(d) A-DNA, B-Capsid, C–Bacteriophage
Answer. A

Question. Match the following columns.
Column I                               Column II
(Scientists)                         (Related to)
A. DJ Ivanowsky (1892)    1. Viroids
B. MW Beijerinck (1898)   2. First crystallised TMV
C. WM Stanley (1935)      3. Contagium vivum fluidum
D. TO Diener (1971)         4. Mosaic disease of tobacco
Codes
     A B C D
(a) 1 4 3 2
(b) 2 1 4 3
(c) 4 3 2 1
(d) 3 2 1 4
Answer. C

Question. Consider the following statements.
I. Viruses that infect plants have single-stranded RNA and viruses that infect animals have either single or double-stranded RNA or doublestranded DNA.
II. Bacterial viruses or Bacteriophages are usually single-stranded RNA viruses.
Choose the correct option.
(a) Statement I is true, but II is false
(b) Statement I is false, but II is true
(c) Both statements I and II are true
(d) Both statements I and II are false
Answer. A

Question. The protein coat of a virus is known as
(a) nucleoid
(b) capsid
(c) capsomere
(d) outer envelope
Answer. A

Question. Which of the following is correct about viroids?
(a) They have free RNA without protein coat
(b) They have DNA with protein coat
(c) They have free DNA without protein coat
(d) They have RNA with protein coat
Answer. B

Question. Difference between virus and viroid is
(a) the absence of protein coat in viroid, but present in virus
(b) the presence of low molecular weight RNA in virus, but absent in viroid
(c) Both (a) and (b)
(d) None of the above
Answer. A

Question. Lichens are mutualistic and symbiotic associations between
(a) mycobiont and virus
(b) mycobiont and phycobiont
(c) mycobiont and root of higher plants
(d) mycobiont and mosses
Answer. B

Question. All eukaryotic unicellular organisms belong to:
(a) Monera
(b) Protista
(c) Fungi
(d) Bacteria
Answer. B

Question. The five kingdom classification was proposed by:
(a) RH Whittaker
(b) C Linnaeus
(c) A Roxberg
(d) Virchow
Answer. A

Question. Organisms living in salty areas are called as:
(a) Methanogens
(b) Halophiles
(c) Heliophytes
(d) Thermoacidophiles
Answer. B

Question. Naked cytoplasm, multinucleated and saprophytic are the characteristics of:
(a) Monera
(b) Protista
(c) Fungi
(d) Slime
Answer. D

Question. An association between roots of higher plants and fungi is called:
(a) Lichen
(b) Fern
(c) Mycorrhiza
(d) BGA
Answer. C

Question. A dikaryon is formed when:
(a) Meiosis is arrested
(b) The two haploid cells do not fuse immediately
(c) Cytoplasm does not fuse
(d) None of the above
Answer. B

Question. Contagium vivum fluidum was proposed by:
(a) DJ lvanowsky
(b) MW Beijernek
(c) Stanley
(d) Robert Hook
Answer. B

Question. Association between mycobiont and phycobiont are found in:
(a) Mycorrhiza
(b) Root
(c) Lichens
(d) BGA
Answer. C

Question. Difference between virus and viroid is:
(a) Absence of protein coat in viroid but present in virus.
(b) Presence of low molecular weight RNA in virus but absent in viroi(d)
(c) Both (a) and (b)
(d) None of the above
Answer. A

Question. With respect to fungal sexual cycle, choose the correct sequence of events.
(a) Karyogamy, Plasmogamy and Meiosis
(b) Meiosis, Plasmogamy and Karyogamy
(c) Plasmogamy, Karyogamy and Meiosis
(d) Meiosis, Karyogamy and Plasmogamy
Answer. C

Question. Viruses are non-cellular organisms, but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong to?
(a) Monera
(b) Protista
(c) Fungi
(d) None of these
Answer. D

Question. Members of phycomycetes are found in:
(a) Aquatic habitats
(b) On decaying wood
(c) Moist and damp places
(d) As obligate parasites on plants
Choose from the following options.
(a) (A) and (D)
(b) (B) and (C)
(c) (B) and (D)
(d) All of these
Answer. D

Assertion & Reason

Directions: These questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.
(a) If both Assertion and Reason are True and the Reason is a correct explanation of the Assertion.
(b) If both Assertion and Reason are True but Reason is not a correct explanation of the Assertion.
(c) If Assertion is True but the Reason is False.
(d) If both Assertion and Reason are False

Question. Assertion: Protozoans are believed to be primitive relatives of animals.
Reason: All protozoans are heterotrophs usually and live as predators or parasites.
Answer. A

Question. Assertion: Deuteromycetes are called as fungi imperfect.
Reason: Only Asexual or vegetative phases of these fungi are known.
Answer. A

Question. Assertion: Pili are surface structure of bacteria but not play a role in motility.
Reason: Pili is made up of pilin protein which is non contractile.
Answer. A

Question. Assertion: Bacteria are the sole members of kingdom monera
Reason: Bacteria have Eukaryotic cellular organization only.
Answer. C

Question. Assertion: Eubacteria photosynthesis is not oxygenic (do not produce oxygen).
Reason: Eubacteria lack PS-II.
Answer. A

Question. Assertion: Neurospora is called as Drosophila of plant kingdom.
Reason: Neurospora is used most extensively inbiochemical and genetic work.
Answer. A

Question. Assertion: Diatomaceous earth is used in polishing, filteration of oil and syrups.
Reason: Diatoms are chief producer in ocean.
Answer. B

Question. Assertion: Species is reproductively isolated natural population.
Reason: Prokaryotes were kept under different species on the basis of reproductive isolation.
Answer. C

Question. Assertion: Dinoflagellates show water bloom.
Reason: Dinoflagellates float with the help of stored foo(d)
Answer. C

Question. Assertion: Azolla increases the production of rice significantly.
Reason: Anabaena are found in the leaves of Azoll(a)
Answer. A

Question. Assertion: Archaebacteria are called ancient bacteri(a)
Reason: Archaebacteria are presently living.
Answer. B

Question. Assertion: Flagellais 11 (Eleven) stranded in protist(a)
Reason: Protista has 9 + 2 arrangement.
Answer. A

Question. Assertion: Slime moulds lack cell wall.
Reason: In reproductive phase, slime moulds contain cell wall.
Answer. B

Question. Assertion: Amoeba contains a contractile vacuole.
Reason: It helps in both digestion and osmoregulation.
Answer. C

Question. Assertion: Malarial fever appear at merozoite stage of Plasmodium.
Reason: The infective stage of Plasmodium is sporozoite.
Answer. A

Question. Assertion: In Paramecium, excess of water is removed from the cytoplasm by means of contractile vacuoles.
Reason: The contractile vaculoes show osmoregulation.
Answer. B

Question. Assertion: Euglena is studied as an animal as well as a plant.
Reason: Euglena is more an animal than a plant.
Answer. A

Question. Assertion: Sporozoans may have silica shells on their surface.
Reason: Shells of sporozoans help in protection from acidic environment of the host.
Answer. D

Question. Assertion: Fungal cellulose or chitin is a polysaccharide.
Reason: It is made of acetyl glucosamine.
Answer. A

Question. Assertion: Flagellation is important in classifying Phycomycetes.
Reason: Flagellation differs from class to class.
Answer. A

Question. Assertion: “Fungi imperfecti” does not show alternation of generation.
Reason: The diploid phase is only present
Answer. C

1 Who proposed two kingdom classification?
2 Name the specialized structure of cyanobacteria helping in fixation of atmospheric nitrogen.
3 Identify the organism causing red tides.
4 List the characteristics chosen for five kingdom classification.
5 Euglena are myxotrophic. Why? Also identify the outer layer of Euglena.
6 What is diatomaceous earth. Write its uses.
7 Name the 4 major groups of protozoans.
8 Describe different types of bacteria.
9 What do you mean by
a) Viroids
b) Bacteriophages
10 Describe the structure of TMV with the help of a diagram.
11 Write a note on Deuteromycetes.
12 What are lichens? Name their components. How are they significant in environmental studies.