Biological Classification Class 11 MCQs Questions with Answers
Question 1.
Sexual reproduction is by copulation of male and female followed by embryological development is characteristic feature of
(a) Animalia
(b) Fungi
(c) Mucor
(d) Plantae
Answer
Answer: (a) Animalia
Question 2.
The blue-green algae are also referred as
(a) Cyanobacteria
(b) Eubacteria
(c) Archaebacteria
(d) Heterotrophic bacteria
Answer
Answer: (a) Cyanobacteria
Question 3.
Antibiotics cure disease by
(a) Competitive Inhibition
(b) Fighting with the disease causing organism
(c) Turning the pathogen out of the body
(d) Removing the pain
Answer
Answer: (a) Competitive Inhibition
Question 4.
The organism that completely lack a cell wall and are smallest living cell know, can survive without oxygen is
(a) Bacteriophages
(b) Yeast
(c) Mycoplasmas
(d) Virus
Answer
Answer: (c) Mycoplasmas
Question 5.
Naked cytoplasm, multinucleated and saprophytic are the characteristics of
(a) Monerans
(b) Slime moulds
(c) Fungi
(d) Protists
Answer
Answer: (b) Slime moulds
Question 6.
Wine turns sour because of
(a) Heat
(b) Aerobic bacteria
(c) Anaerobic bacteria
(d) Exposure to the light
Answer
Answer: (b) Aerobic bacteria
Question 7.
Which among the following is not included in the three domains system?
(a) Bacteria Domain
(b) Archaea Domain
(c) Viral Domain
(d) Eukara Domain
Answer
Answer: (c) Viral Domain
Question 8.
Which one of the following is true for fungi?
(a) They are phagotrophs
(b) They lack a rigid cell wall
(c) They are heterotrophs
(d) They lack nuclear membrane
Answer
Answer: (c) They are heterotrophs
Question 9.
Which Archaebacteria is present in the guts of ruminant animals such as cows and buffaloes?
(a) Speculums
(b) Methanogens
(c) Heterogens
(d) Holophiles
Answer
Answer: (b) Methanogens
Question 10.
Which of the following is an exception of monera kingdom –
(a) Bacteria
(b) Virus
(c) Cyanobacteria
(d) Mycoplasma
Answer
Answer: (b) Virus
Question 11.
Archegoniophore is present in:
(a) Marchantia
(b) Chara
(c) Adiantum
(d) Funaria
Answer
Answer: (a) Marchantia
Question 12.
The main difference between Gram positive and gram negative resides in the composition of:
(a) Cilia
(b) Cell-wall
(c) Cell-membrane
(d) Cytoplasm
Answer
Answer: (b) Cell-wall
Question 13.
Which of the following structure is not found in prokaryotic cells :
(a) Plasma membrane
(b) Ribosomes
(c) Nuclear membrane and membranous cell organelles
(d) Hereditary substance
Answer
Answer: (c) Nuclear membrane and membranous cell organelles
Question 14.
Virus envelope is known as:
(a) Capsid
(b) Virion
(c) Nucleoprotein
(d) Core
Answer
Answer: (a) Capsid
Question 15.
Moneran phylogeny is best evidenced by sequence of nucleotides in RNA of ribosomes. On the basis of this information, the most primitive monerans are :-
(a) Archaebacteria
(b) Eubacteria
(c) Filamentour bacteria
(d) Cyanobacteria
Answer
Answer: (a) Archaebacteria
Question 16.
In eubacteria, a cellular component that resembles eukaryotic cells is:
(a) Plasma membrane
(b) Nucleus
(c) Ribosomes
(d) Cell wall
Answer
Answer: (a) Plasma membrane
Question 17.
Archaebacteria differ from eubacteria in:
(a) Cell membrane
(b) Mode of nutrition
(c) Cell shape
(d) Mode of reproduction
Answer
Answer: (a) Cell membrane
Question 18.
One of the major components of cell wall of most fungi is:
(a) Chitin
(b) Peptidoglycan
(c) Cellulose
(d) Hemicellulose
Answer
Answer: (a) Chitin
Question 19.
Nuclear membrane is absent in
(a) Fungi
(b) Protista
(c) Plantae
(d) Monera
Answer
Answer: (d) Monera
Question 20.
Five kingdom system of classification suggested by R.H. Whittaker is not based on:
(a) Presence or absence of a well defined nucleus.
(b) Mode of reproduction.
(c) Mode of nutrition.
(d) Complexity of body organisation.
Answer
Answer: (a) Presence or absence of a well defined nucleus.
Question 21.
Which of the following organisms were placed together under algae?
(a) Chlorella and Chlamydomonas
(b) Spirogyra and Chlamydomonas
(c) Spirogyra and Chlorella
(d) All of the above
Answer
Answer: (d) All of the above
Question 22.
Genetic material for retrovirus is
(a) Nucleoprotein complex
(b) RNA
(c) Both DNA and RNA
(d) DNA
Answer
Answer: (b) RNA
Question 23.
Which one of the following fixes CO2 in to carbohydrates
(a) Rhizobium
(b) Nitrobactor
(c) Bacillus
(d) Rhodospirillum
Answer
Answer: (d) Rhodospirillum
Question 24.
Satellite RNAs are present in some
(a) Plant viruses
(b) Viroids
(c) Prions
(d) Bacteriophages
Answer
Answer: (a) Plant viruses
Question 25.
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
Answer: (b) All of them have helical symmetry
Question 26.
Which of the following lacks peptidoglycan in their cell walls:
(a) Halophile bacteria
(b) Methanogen bacteria
(c) Thermoacidophilic bacteria
(d) All the above
Answer
Answer: (d) All the above
Question 27.
Mesosomes are found in:
(a) Fungi
(b) Virus
(c) Mycoplasma
(d) Bacteria
Answer
Answer: (d) Bacteria
Question 28.
The organism that completely lack a cell wall and are smallest living cell known that can survive without oxygen is
(a) Virus
(b) Bacteriophages
(c) Yeast
(d) Mycoplasma
Answer
Answer: (d) Mycoplasma
Question 29.
Which one of the following organisms is not an example of eukaryotic cells?
(a) Paramecium caudatum
(b) Escherichia coli
(c) Euglena viridis
(d) Amoeba proteus
Answer
Answer: (b) Escherichia coli
Question 30.
Which one of the following is not a biofertilizer?
(a) Agrobacterium
(b) Rhizobium
(c) Nostoc
(d) Mycorrhiza
Answer
Answer: (a) Agrobacterium
Question 31.
Who is called as “Father of taxonomy”
(a) Hooker
(b) Theophrastus
(c) Aristotle
(d) Linnaeus
Answer
Answer: (d) Linnaeus
Question 32.
Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom
(a) Monera
(b) Protista
(c) Fungi
(d) Animalia
Answer
Answer: (b) Protista
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