CBSE Class 11 Biology Biological Classification MCQs Set A

Question : Which of the following processes are involved in the reproduction of protista?

a) Cell fusion and zygote formation

b) Spore formation and fragmentation

c) Budding and spore formation

d) Binary fission and fragmentation

Answer : Cell fusion and zygote formation

Question : In prokaryotes, the genetic material is

a) circular DNA without histones

b) linear DNA without histones

c) circular DNA with histones

d) linear DNA with histones

Answer : circular DNA without histones

Question : Bacteria is a group of prokaryotic organisms which is characterised by

a) All of the above

b) Simple structure and complex behaviour

c) 70 S ribosomes

d) Peptidoglycan cell wall

Answer : All of the above

Question : What may be a 'photosynthetic protistian' to one biologist may be 'a plant' to another? Which of the given below features of slime moulds shows linkage with plant?

a) Slime moulds have cellulosic spore wall

b) Formation of fruiting bodies

c) Presence of diverse sexual reproduction

d) Presence of holozoic nutrition

Answer : Slime moulds have cellulosic spore wall

Question : Choose the correct match

a) Desmids – Chrysophytes

b) Gymnodinium – Hemicellulosic plates in wall

c) Euglena – Chlorophyll a & c

d) Gonyaulax – Red sea

Answer : Desmids – Chrysophytes

Question : Nuclear dimorphism is shown by

a) Paramecium

b) Plasmodium

c) Amoeba

d) Trypanosoma

Answer : Paramecium

Question : Most common type of genetic material present in bacteriophages is

a) ds DNA

b) ds RNA

c) ss RNA

d) ss DNA

Answer : ds DNA

Question : Which of the following statement about Mycoplasma is true:

a) They differ from viruses in being cellular in organisation

b) Insensitive to several antibiotics as they have 70S ribosomes

c) They can survive without photosynthetic pigments and genetic material

d) They are smallest, disease causing thin walled organisms

Answer : They differ from viruses in being cellular in organisation

Question : Eubacteria can be differentiated from archaebacteria on the basis of

a) Cell wall

b) Ribosomes

c) Gene of tRNA

d) Nutrition

Answer : Cell wall

Question : Phenetic classification of organisms is based on

a) Observable characteristics of existing organisms

b) The ancestral lineage of existing organisms

c) Dendogram based on DNA characteristics

d) Sexual characteristics

Answer : Observable characteristics of existing organisms 

Question : The practical purpose of classification of living organisms is to

a) facilitate identification of unknown organisms

b) name the living organisms

c) trace the evolution of living organisms

d) explain the origin of living organisms

Answer : facilitate identification of unknown organisms

Question : A system of classification in which a large number of traits are considered, is

a) natural system

b) synthetic system

c) artificial system

d) phylogenetic system

Answer : natural system

Question : In five kingdom system, the main basis of classification is

a) mode of nutrition

b) asexual reproduction

c) structure of nucleus

d) structure of cell wall

Answer : mode of nutrition

Question : Phenetic classification is based on

a) Observable characteristics of existing organisms

b) Dendograms based on DNA characteristics

c) The ancestral lineage of existing organisms

d) Sexual characteristics

Answer : Observable characteristics of existing organisms

Question : In which kingdom would you classify the archaebecteria and nitrogen-fixing organisms. If the five-kingdom system of classification is used ?

a) Monera

b) Fungi

c) Plantae

d) Protista

Answer : Monera

Question : On how many criteria living organisms have been classified into five kingdoms ?

a) Four

b) Three

c) Two

d) Five

Answer : Four

Question : First true phylogenetic system of classification was given by

a) Engler and Prantl

b) de Candolle

c) Eichler

d) de Jussiaeu

Answer : Engler and Prantl

Question : Which of the following is not correctly matched?

a) Covered smut of barley - Ustilago nuda

b) Late blight of potato - Phytophthora infestans

c) Smut of bajra - Tolysporium penicillariae

d) Root knot disease - Meloidogyne javanica

Answer : Covered smut of barley - Ustilago nuda

Question : Which one of the following character was not used by R.H. Whittaker for biological classification ?

a) Physiological characters

b) Thallus organisation

c) Phylogenetic relationships

d) Cell structure

Answer : Physiological characters

Question : ‘Comma’ shaped bacteria are known as

a) vibrio

b) spiral

c) coccus

d) spirillum

Answer : vibrio