Objective Type Questions

Question. Bacteria with flagella on both sides are
a. Amphitrichous
b. Cephalotrichous
c. Peritrichous
d. Lophotrichous

Question. In which of the following patterns of viral replication, viruses enter a cell, replicate and then cause the cell to burst, releasing new viruses?
a. Lytic
b. Lysogenic
c. Repreogenic
d. Both (a) and (b)

Question. Which of the following cannot be grown on artificial culture medium?
a. Escherichia coli
b. TMV
c. Aspergillus
d. Yeast

Question. Sometimes virus attacks a bacterium but none of them dies. The phenomenon is
a. Transduction
b. Penetration
c. Lysogeny
d. Adsorption

Question. Which of the following are absent in Eubacteria
A. 80S Ribosomes
B. Cellulosic cell walls
C. Plasma membrane
D. Circular dsDNA
a. A & C
b. B & C
c. A & B
d. C & D

Question. VAM are
a. Saprophytic bacteria
b. Saprophytic fungi
c. Symbiotic fungi
d. Symbiotic bacteria

Question. Choose the incorrect statement about the given organism?

a. Two, unequal flagella are found
b. It dies, when deprived of sunlight
c. Member of kingdom Protista
d. Photosynthetic pigments are similar to those of higher plants

Question. Match the columns and find out the correct combination:

A. Phycomycetes	1. Fungi imperfecti
B. Ascomycetes	2. Club fungi
C. Basidiomycetes	3. Algal fungi
D. Deuteromycetes	4. Solanum tuberosum

a. A-3 B-4 C-1 D-2
b. A-3 B-4 C-2 D-1
c. A-1 B-2 C-3 D-4
d. A-1 B-4 C-2 D-3

Question. Match the columns and find out the correct combination:
A. Viroid 1. Nucleoprotein
B. Virus 2. Infectious protein
C. Prion 3. Infectious nucleic acid
D. Virion 4. Infectious viral particle
a. A-4 B-1 C-2 D-3
b. A-2 B-4 C-1 D-3
c. A-3 B-1 C-2 D-4
d. A-4 B-2 C-3 D-1

Question. Match the columns and find out the correct combination:

A. Binary fission	1. Bacteria
B. Budding	2. Yeast
C. Somatogamy	3. Some higher fungi
D. Oogamy	4. Algal

a. A-1 B-2 C-3 D-4
b. A-4 B-2 C-1 D-3
c. A-1 B-4 C-2 D-3
d. A-4 B-1 C-2 D-3

Question. Read the statements (A-D) and select the incorrect ones.
A. Though the bacterial cell structure is very simple, they are very complex in behaviour.
B. Chrysophytes include diatoms, desmids and dinoflagellates.
C. Slime moulds, during suitable conditions, forms fruiting bodies.
D. Lichen, in nature , had two different organisms within them.
a. A & B
b. C & D
c. A & D
d. B & C

Question. Identify the correct statements from the following.
A. All monerans show non-cellulosic cell walls.
B. All protistans show true nucleus.
C. All fungi are plants with cellulosic cell walls.
D. All protists are autotrophic and all monerans are heterotrophic.
a. A & B
b. B & D
c. B & C
d. A & D

Question. Cell wall of kingdom Plantae organisms is made up of
a. Chitin
b. Cellulose
c. Polysaccharides
d. Lipids

Question. Which of the following is true for Kingdom Animalia?
a. Cell wall are present in animal cell.
b. Their mode of nutrition is holozoic.
c. They do not follow a definite growth pattern.
d. All of them are capable of locomotion.

Question. Virion is
a. Nucleic acid of virus
b. Antiviral agent
c. Protein of virus
d. Completely assembled virus outside host

Question. Viruses are
a. Obligative parasite
b. Facultative
c. Either facultative or obligative
d. None of these

Question. Viruses that infect animals have which type of genetic material?
a. Either single or double stranded RNA
b. Either single/double stranded RNA or double stranded DNA.
c. Single stranded DNA
d. None of these

Question. Viroid was discovered by
a. Ernst Mayr
b. Norman E. Borlaug
c. T. O. Diener
d. None of these

Question. Match the following

A. Saxicolous lichen	1. Grows on tree bark
B. Corticolous lichen	2. Grows on soil
C. Terricolous lichen	3. Grows on rock

a. A-3 B-1 C-2
b. A-3 B-2 C-1
c. A-2 B-3 C-1
d. A-1 B-3 C-2

Question. In Rous Sarcoma Virus information flow is:
a. RNA → cDNA → Protein
b. cDNA → RNA → Protein
c. RNA → cDNA → Protein
d. cDNA → Protein → RNA

Question. Tailed bacteriophage is:
a. Motile on surface of plant leaves
b. Actively motile in water
c. Motile on bacterial surface
d. Nonmotile

Question. Virus was discovered by:
a. Stanley
b. Herellel
c. Ivanowski
d. Beijerinck

Question. Franklin Conrat demonstrated that RNA is genetic material in:
a. HIV
b. TMV
c. CMV
d. Mouse Sarcoma

Question. Find the correct matches:

List I	List II
A. M13 bacteriophase	1. dsRNA
B. Rice Dwarf Virus	2. ssRNA
C. Cauliflower Mosaic Virus	3. ssDNA
D. Polio Virus	4. dsRNA

a. A-4 B-3 C-1 D-2
b. A-2 B-1 C-3 D-4
c. A-3 B-4 C-2 D-1
d. A-3 B-1 C-4 D-2

Question. Virion is a/an:
a. Virus
b. Enucleated virus
c. Prion
d. Virus without protein coat

Question. The technique of developing pure culture of bacteria was developed by:
a. J. Lister
b. L. Pasteur
c. R. Koch
d. A.V. Leeuwenhoek

Question. Majority of lichens are made of:
a. Blue-green algae and basidiomycetes
b. Brown algae and higher plants
c. Red algae and ascomycetes
d. Blue-green algae and ascomycetes

Image Based Questions

Question. What kind of reproduction is shown in this diagram?

Mode of Reproduction	Conditions
a. Budding	Favourable
b. Binary fission	Favourable
c. Spore formation	UnFavourable
d. Budding	UnFavourable

Question. Identify the bacterial shape given in the figure.

a. Bacilli
b. Cocci
c. Spirilla
d. Vibrio

Question. The given organism belongs to which group?

a. Protozoans
b. Chrystophytes
c. Euglenoids
d. Diatoms

Higher Order Questions

Question. The first life on earth consisted of
a. Provirus
b. Protovirus
c. Virus
d. Bacteria

Question. In bacteria, the site for respiratory activity is found in:
a. Episome
b. Microsome
c. Ribosome
d. Cell membrane

Question. Toxin is secreted during storage condition by
a. Fusarium
b. Colletotrichum
c. Penicillium
d. Aspergillus

Question. Litmus dye is made from
a. Fungi
b. Bacteria
c. Algae
d. Lichens

Question. Which of the following statement is correct w.r.t above diagram?

a. ‘A’ is mucilaginous sheath and is also found in Rivularia
b. ‘A’ is mucilaginous sheath and is also found in Anabaena
c. ‘A’ is heterocyst and is also found in methanogens
d. ‘A’ is heterocyst and is also found in Anabaena

Question. Match the columns and find out the correct combination:

A. Cleistothecium	1. Saucer-shaped ascocarp
B. Perithecium	2. Basidiocarp
C. Apothecium	3. Flask-shaped ascocarp
D. Puffballs	4. Closed globose ascocarp

a. A-4 B-3 C-1 D-2
b. A-4 B-3 C-2 D-1
c. A-3 B-4 C-1 D-2
d. A-3 B-1 C-2 D-4

Question. Match the columns and find out the correct combination:

A. Red rot	1. Ustilago
B. Smut	2. Puccinia
C. Rust	3. Colletotrichum
D. Early blight	4. Albugo
	5. Alternaria

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

Question. Which of the following statement about Mycoplasma is true?
a. They are smallest, disease causing thin walled organisms.
b. They differ from viruses in being cellular in organization.
c. Insensitive to several antibiotics as they have 70S ribosomes.
d. They can survive without photosynthetic pigments and genetic material.

Question. Incorrect statement is:
a. Mycoplasma plays a significant role in the evolution of aerobic forms of life.
b. Tolypothrix and Aulosera fixes N₂ non-symbiotically in rice fields.
c. Anabaena, Microcystis and Aphanizomenon are known to cause algal blooms.
d. Bryophytes (liverworts) are first archegoniates.

Question. Identify true statements about archaebacteria.
A. They can live in harsh habitats.
B. Cell walls do not contain peptidoglycon.
C. Cell membrane contains branched chain lipids.
D. Some of them are capable of producing biogas.
a. A & B only
d. A, B & C only
c. B & C only
d. All of these

NCERT Exemplar Problems

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

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

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

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

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

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

Past Year Questions

Question. One of the major components of cell wall of most fungi is:
a. Chitin
b. Peptidoglycan
c. Cellulose
d. Hemicellulose

Question. Male gametes are flagellated in:
a. Ectocarpus
b. Spirogyra
c. Polysiphonia
d. Anabaena

Question. True nucleus is absent in:
a. Vaucheria
b. Volvox
c. Anabaena
d. Mucor

Question. The imperfect fungi which are decomposer of litter and help in mineral cycling belong to:
a. Basidiomycetes
b. Phycomycetes
c. Ascomycetes
d. Deuteromycetes

Question. Archaebacteria differ from Eubacteria in:
a. Mode of reproduction
b. Cell membrane structure
c. Mode of nutrition
d. Cell shape

Question. How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolfia:
a. Four
b. Five
c. Six
d. Three

Question. Which is common about Trypanosoma, Noctiluca, Monocystis and Giardia?
a. They are all parasites
b. They are all unicellular protists
c. They have flagella
d. They produce spores

Question. Barophilic prokaryotes:
a. Occur in water containing high concentration of barium hydroxide
b. Grow slowly in alkaline frozen lakes at high altitude
c. Grow and multiply in very deep marine sediments
d. Readily grow and divide in sea water enriched with soluble salt of barium.

Question. Viruses are no more “alive” than isolated chromosomes 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

Question. Lipids are insoluble in water because lipids molecules are:
a. Hydrophilic
b. Hydrophobic
c. Neutral
d. Zwitter ions

Question. What is true for cyanobacteria?
a. Oxygenic with nitrogenase
b. Oxygenic without nitrogenase
c. Non oxygenic with nitrogenase
d. Non oxygenic without nitrogenase

Question. Nucleic acid in HIV:
a. ssRNA
b. dsRNA
c. ssDNA
d. dsDNA

Question. Transduction in bacteria carried out by:
a. Bacteriophage
b. B.G.A.
c. Mycoplasma
d. Rickettsiae

Question. Which are the sex organs provided in some bacteria?
a. Sex pili
b. Plasmid
c. Circular DNA
d. Gametes

Question. The black rust of wheat in a fungal disease caused by:
a, Albugo candida
b. Puccinia graminis tritici
c. Melampsora lini
d. Claviceps purpurea