CBSE Class 11 Biology Biological Classification MCQs Set 05

Question. About pathogenecity of viruses which among the following is not correct ?
(a) Plant infecting viruses having ssRNA
(b) Animal infecting viruses having single or double stranded RNA or double stranded DNA
(c) Bacteriophages usually have double stranded RNA
(d) Bacterophages usually have double stranded DNA

Answer: C

Question. Which of the following character is common in both cyanobacteria and green plants ?
(a) Cell wall composition
(b) Presence of chlorophyll ‘a’
(c) Presence of Nif gene
(d) Presence of 80s ribosome

Answer: B

Question. Choose the incorrect statement about hycomycetes :-
(a) Members are found in aquatic habitats
(b) Spores are endogenously produced in sporangium
(c) Zygospore is formed by reduction division
(d) Its members reproduce sexually may be isogamous, anisogamous or oogamous.

Answer: C

Question. Select false statement :-
(a) Lichens are symbiotic association between algae & fungi
(b) Viruses are smaller than bacteria
(c) Virus name are obligate parasites
(d) Viruses are facultative parasite

Answer: D

Question. Endomycorrhizal fungus is :-
(a) Pythium
(b) Mucor
(c) Glomus
(d) Rhizopus

Answer: C

Question. Which kingdom out of five kingdoms proposed by Whittaker, forms a link with others dealing with plants, animals and fungi ?
(a) Monera
(b) Protista
(c) Plantae
(d) Fungi

Answer: B

Question. Which among the following is the characteristic of viroids
(a) Larger than viruses
(b) Have free infectious DNA
(c) Have free infectious RNA
(d) Have high molecular weight RNA

Answer: C

Question. Select incorrect statement about viroid :-
(a) Free infectious RNA
(b) It was discovered by T.O. Diener
(c) It causes potato spindle tuber disease
(d) It contains high molecular weight RNA

Answer: D

Question. Which of the following group of organisms show a great diversity in morphology and habitat :-
(a) Chrysophytes
(b) Dinoflagellates
(c) Protozoan protists
(d) Fungi

Answer: D

Question. Which is not a member of Phycomycetes ?
(a) Albugo
(b) Aspergillus
(c) Rhizopus
(d) Mucor

Answer: B

Question. Ones perfect (Sexual) stages of members of deuteromycetes were discovered they were often moved to
(a) Phycomycetes
(b) Ascomycetes only
(c) Basidiomycetes only
(d) Either ascomycetes or basidiomycetes

Answer: D

Question. Fungus prefers to grow in :-
(a) Warm and humid places
(b) Cold and humid places
(c) Warm and cold both
(d) Warm, cold and humid places

Answer: A

Question. Generally plant viruses are :-
(a) Double stranded DNA viruses
(b) Single stranded RNA viruses
(c) Single stranded DNA viruses
(d) Double stranded RNA viruses

Answer: B

Question. Which process is not performed by bacterial activity?
(a) Production of antibiotics
(b) Fixing nitrogen in legumes
(c) Making curd from milk
(d) Production of pseudomycelium

Answer: D

Question. Which organism is responsible for making the sea appear red by rapid multiplication ?
(a) Euglena
(b) Noctiluca
(c) Gonyaulax
(d) Trypanosoma

Answer: C

Question. According to five kingdom system of classification, single celled eukaryotes are placed under protista, members of protista are primarily
(a) Terrestrial
(b) Aquatic
(c) Saprophytic
(d) Epiphytic

Answer: B

Question. The cell wall of fungi are composed of :-
(a) Chitin and cellulose
(b) Cellulose and polysaccharides
(c) Chitin and polysaccharides
(d) Chitin, polysaccharides and glycogen

Answer: C

Question. Choose the correct statement :-
(a) Most of the bacteria are autotrophs
(b) All bacteria are heterotrophs
(c) Some bacteria are heterotrophs
(d) Most of the bacteria are heterotrophs

Answer: D

Question. According to five kingdom system, kingdom protista includes :-
(a) Dinoflagellates, Diatoms, Euglenoids, Slime mould, Bacteria
(b) Eunglenoids, Fungi, Slime mould, Dinoflagellates, Protozoans
(c) Slime mould, Protozoans, Dionflagellates, Diatoms, Euglenoids
(d) Protozoans, Moss, Euglenoids, Slime mould, Diatoms

Answer: C

Question. Which fungus is used extensively in biochemical and genetic work ?
(a) Agaricus
(b) Aspergillus
(c) Claviceps
(d) Neurospora

Answer: D

Question. Choose the correct set of bacterial disease :-
(a) Mumps, cholera, dengue
(b) Chicken pox, typhoid, mumps
(c) Mumps, tetanus, chicken pox
(d) Cholera, typhoid, tetanus

Answer: D