Important MCQ of Classification of Living Organisms class 11 with answer.

MCQ of classification of living organisms

Multiple choice questions with answers of Classification of Living Organisms for WBCHSE students.

Q.1 In which year Whittaker proposed five kingdom classification?

a) 1979
b) 1960
c) 1959
d) 1969

Answer : d) 1969

Q. 2 Most abundant micro organism are

a) Bacteria
b) amoeba
c) virus
d) paramecium

Answer: a) Bacteria

Q.3 How many main criteria were used by Whittaker for classification ?

a) 5
b) 1
c) 3
d) 4

Answer: d) 5

Q.4 Which of the following is incorrect about bacteria ?

(A) It is group under five categories on the basis of shape.
(B) It is composed of simple behavior and complex structure.
(C) It can live in deep ocean, hot spring, snow and desert.
(d) It can live as parasite.

a) A and B only.
b) B and D only.
c) A and D only
d) C and D only

Answer : b) B and D only

Q.5 Chlamydomonas , Chlorella, Paramoecium and Amoeba are placed in which kingdom of Whittaker’s classification ?

a) Monera
b) Protista
c) Plantae
d) Fungi

Answer : b) Protista

Q.6 In earlier classification ( like two kingdoms) , the following are included in plant

(1) Bacteria, blue green algae and fungus
(2) Mosses and fern
(3) Gymnosperm and angiosperm

a) (3 )only
b) (1) only
c) (2) and (3) only
d) All

Answer: d) All

Q.7 Most extensive metabolic diversity found in

a) Protozoans
b) fungi
c) Amphibian
d) Bacteria

Answer: d) bacteria

Q.8 Specialized cell of Nostoc and Anabaena fix nitrogen are known as

a) cholecyst
b) cyst
c) heterocyst
d) oocyst

Answer : c) heterocyst

Q.9 Chief producers in ocean are

a) Chrysophytes.
b) BCA
c) Euglenoids
d) Dianoflagellate

Answer : a) Chrysophytes

Q. 10 Which of the following is incorrect about protista ?

a) All are single cell eukaryotes.
b) Some have flagella and cilia
c) Sexually reproduce by cell fusion and zygote formation
d) Members of protista are primary terrestrial

Answer d) Members of protista are primary terrestrial

Q.11 Diatomaceous earth is used in

a) filtration of oils
b) filtration of syrups
c) polishing
d) all of these

Answer : d) all of these

Q.12 Which of the following statements is true about Cyanobacteria ?

a) It is found in fresh water only.
b) They often form bloom in now polluted fresh water body.
c) It may be unicellular, filamentous or colonial
d) Colonies are not surrounded by gelatinous sheath

Answer: c) It may be unicellular, filamentous or colonial

Q.13 Select the total number of disease from the following caused by bacteria, Mumps, smallpox, Citrus canker , Cholera, Typhoid, Tetnus, Sleeping sickness, Malaria,

a) 2
b) 6
c) 4
d) 5

Answer: c) 4

Q.14 Most of the bacteria are

a) heterotroph
b) holozoic
c) chemo- autotrophs
d) photo- autotrophs

Answer: a) heterotroph

Q. 15 Mostly marine, photosynthetic and biflagellate organisms are

a) Dianoflagellates
b) Desmids
c) Diatoms
d) Euglenoids

Answer: a) Dianoflagellates

Q.16 Red tide is because of

a) desmids
b) Gonyaulux
c) Euglena
d) red algae

Answer: b) Gonyaulux

Q.17 Which of the following is true about gonyaulux?

a) Slow multiplication causing red tide
b) Release toxin
c) Heterotrophic
d) All of these

Answer : b) Release toxin

Q.18 Euglenoids have flexible body because of

a) pectinic wall
b) cellulosic wall
c) protein rich pellicle
d) lipoic wall

Answer: c) protein rich pellicle

Q.19 Characteristic feature of Euglenoids are

A. Presence of cell wall
B. Presence of two flagella
C. Photosynthetic in presence of sunlight
D. Presence of pellicle on their cell

a) A, B only
b) B, D only
c) B, C, D only
d) All of these

Answer: c) B, C, D only

Q.20 Sexual reproduction in fungus is by

a) ascospores
b) Oospores
c) Basidiospores
d) any of the above

Answer: d) any of the above

Q. 21 Dikaryon and dikaryophase is seen in case of

a) ascomycetes
b) basidiomycetes
c) phycomycetes
d) both a) and b)

Answer : d) both a) and b)

Q. 22 Euglena posses all except

a) mixotrophic nutrition.
b) pellicle
c) two equal flagella
d) two unequal flagella

Answer: c) two equal flagella

Q.23 Pigments of Euglenoids are identical to

a) Diatoms
b) Bacteria
c) Dianoflagellates
d) higher plants

Answer: d) higher plants

Q.24 Sexual reproduction in fungus occurs in following sequential event. Arrange them properly .

A. Fusion of two nuclei called karyogamy.
B.Fusion of protoplasm between two motile or non-motile gametes.
C. Meiosis in zygote resulting in haploid spores.

a) A→B→C
b) B→A→C
c) C→B→A
d) C→A→B

Answer: b) B→A→C

Q 25. Character belongs to slime moulds

A. Saprophytes.
B.Spores are dispersed by water.
C.Spores possess true walls.
D.Forms plasmodium under favourable condition.
E. Body moves along decaying twigs and leaves engulfing organic matter.

a) All except B
b) All except E
c) All except C and E
d) All except D

Answer : a) All except B

Q 26.Habitats of phycomycetes are

a) aquatic
b) decaying wood in moist and damp place.
c) Obligate parasite in plant
d) all

Answer: d) all

27. Find out the correct matching:

a) Ustilago – Smut
b) Puccinia – Rust
c) Agaricus – Mushroom
d) All of these

Answer: d) All of these

28.Bacteriophage generally have

a) double standard DNA.
b) double standard RNA
c) single standard RNA
d) any of the above

Answer: a) double standard DNA

29. Which of the following is incorrect about lichens?

a) Alage provide shelter to fungus
b) Algae part is autotrophic
c) Fungus provide shelter to algae.
d) Fungus part absorb nutrients and minerals

Answer: a) Algae provide shelter to fungus

30.In cell wall forms two thin overlapping shells which fit together as in a soap box.

a) Diatoms
b) Dinoflagellates
c) Euglenoids
d) none of these

Answer: b) Dinoflagellates

31. Following feature belong to class

A. Asexual spores conidia produced exogenously
B. Sexual spores produced endogenously.
C.Mycelium branched and septate
D.Many members of this class are edible.

a) ascomycetes
b) deuteromycetes
c) phycomycetes
d) basidiomycetes

Answer: a) ascomycetes

32. Deuteromycetes are known as imperfect fungi because

a) only asexual or vegetative phase are known.
b) only sexual phase is found.
c) both asexual and sexual phase are known.
d) reproduction in these fungi is absent

Answer: a) only sexual and vegetative phase are known

33. ‘Viroids’ is discovered by

a) Stanley.
b) Ivanowsky.
c) T. O. Diener
d) Beijerinckia

Answer: c) T. O. Diener

34. Genes of Tobacco Mosaic virus are

a) Double standard RNA.
b) Single standard RNA
c) Double standard DNA
d) Proteinaceous

Answer: b) single standard RNA