Biological Classification MCQ Questions Class 11 Biology Chapter 2
NCERT MCQ Questions for Class 11 Biology Chapter 2 Biological Classification. Biological Classification MCQ Questions with Answers from Class 11 Biology.
Biological Classification Multiple Choice Questions with Answers Class 11 Biology Chapter 2 PDF is available.
1.) Who proposed five kingdom classification?
a) Aristotle b) Linnaeous c) R.H Whittaker d) Hooke
Ans- c) R.H Whittaker
Explanation: In 1969, Whittakerproposed 5 kingdom classification that is monera, Protista, fungi, plantae & Animalia
2.) Which of the following is not an eukaryotes?
a) Spirilla b) Diatoms c) Gonyaulax d) Euglena
Ans- a) Spirilla
Explanation: Spirilla is a bacteria which comes under the kingdom Monera. It is identified as prokaryotes.
3.) Bacteria are the sole members of which kingdom?
a) Protista b) Fungi c) Animalia d) Monera
Ans- d) Monera
Explanation: They are the most abundant micro- organism & occurs almost everywhere.
4.) Which of the following is not a characteristics of Eubacteria?
a) Rigid cell wall b) chlorophyll a c) gelatinous sheath d) Methanogens
Ans- d) methanogens
Explanation: Methanogens are present in the guts of archaebacteria.
5.) Red tides are caused by which organism?
a) Gonyaulax b) Diatoms c) Euglena d) Albugo
Ans- a) Gonyaulax
Explanation: it comes under the category of red dinoflagellates as it contains red pigment and when they undergo rapid multiplication, they make sea appear red.
6.) Which of the following is incorrect about mycoplasma?
a) Lack cell wall b) smallest living organism c) can survive without oxygen d) photosynthetic autotrophs
Ans- d) photosynthetic autotrophs
Explanation: Mycoplasma is a heterotrophic bacteria.
7.) Which of the following does not comes under the Protista?
a) Chrysophytes b) Euglenoids c) Phycomycetes d) dinoflagellates
Ans- c) Phycomycetes
Explanation: Phycomycetes comes under the kingdom Fungi.
8.) Which of the following consist of plasmodium?
a) Protozoans b) slime moulds c) Basidiomycetes d) Euglenoids
Ans- b) slime moulds
Explanation: Plasmodium is a saprophytic protist that comes under class of slime moulds.
9.) Which of the following statement is incorrect about virus?
a) Contains both RNA & DNA b) non- cellular organism 9
b) c) obligate parasites d) smaller than bacteria
Ans- a) consist both RNA & DNA
Explanation: It contains eitherRNA or DNA because it will complex its mechanism.
10.) Which of the following organism causes sleeping sickness in human beings?
a) Entamoeba b) Trypanosoma c) paramoecium d) plasmodium
Ans- b) Trypanosoma
Explanation: Trypanosoma is a flagellated protozoans which causes disease in its parasitic forms.
11.) Which of the following fungi is used to make antibiotics?
a) Penicillium b) puccinia c) yeast d) mucor
Ans- a) Penicillium
12.) In Mycorrhiza, the fungi are associated with which organism?
a) Algae b) Nostoc c) roots of higher plants d) diatoms
Ans- c) roots of higher plants
Explanation: The fungi provides nutrients such as phosphorus, nitrogen to the roots of higher plants.
13.) What is karyogamy?
a) Fusion of protoplasm b) fusion of two nuclei c) Meiosis in Zygote d) dikaryophase
Ans- b) fusion of two nuclei
Explanation: It is the 2nd in the sexual cycle of fungi that occurs after the fusion of protoplasm.
14.) Which of the following is not a asexual spores of fungi?
a) Basidiospores b) Conidia c) zoospores d) sporangiospores
Ans- a) Basidiospores
Explanation: Basidiospores is a mode of sexual reproduction.
15.) Which of the following is correct about prions?
a) Infectious neurological disease b) it cause mad cow disease c) consist of abnormally folded protein d) all of these
Ans- d) All of these
16.) Viroids was discovered by which scientists?
a) T.O Diener b) Beijerinek c) Ivanowsky d) Stanley
Ans- a) T.O Diener
Explanation: In 1971, Diener discovered a new infectious agent that was smaller than virus and caused potato spindle tuber disease.
17.) Which of the following disease is not caused by virus?
a) AIDS b) Tuberculosis c) Small pox d) Herpes
Ans-b) Tuberculosis
Explanation: It is caused by the bacteria Mycobacterium tuberculosis.
18.) Which of the following kingdom lack cell wall?
a) Monera b) Protista c) plantae d) Animalia
Ans- d) Animalia
19.) Which of the following Fungi is called as imperfect fungi?
a) Deuteromycetes b) Phycomycetes c) Basidiomycetes d) Ascomycetes
Ans- a) Deuteromycetes
Explanation: It is because of only asexual and vegetative phase of these fungi are known and not sexual mode.
20.) Ustilago and puccinia are examples of which fungi?
a) Phycomycetes b) Basidiomycetes c) Deuteromycetes d) Ascomycetes
Ans- b) Basidiomycetes
21.) Which of the following organism is used for biochemical and genetic work?
a) Aspergillus b) Agaricus c) Claviceps d) Neurospora
Ans- d) Neurospora
Explanation: It is easy to grow, haploid life cycle and recessive traits are shown in offspring.
22.) Which of the following members of fungi does not have mycelium septate and branched?
a) Deuteromycetes b) Ascomycetes c) Phycomycetes d) Basidiomycetes
Ans- c) Phycomycetes
Explanation: Mycelium is aseptate and coenocytic.
23.) Which of the fungi does not have sex organs but performs sexual reproduction?
a) Basidiomycetes b) Deuteromycetes c) Phycomycetes d) Ascomycetes
Ans- a) Basidiomycetes
Explanation: Sex organs are absent but plasmogamy is brought by the fusion of two vegetative cells or somatic cells. The resultant structure is dikaryotic which give rise to basidium. The further process take place.
24.) Who is called as chief producers in the oceans?
a) Desmids b) Euglena c) Spirilla d) diatoms
Ans- d) diatoms
Explanation: Diatoms form diatomaceous earth which is used for polishing, filtration & many more .
25.) Heterocyst is present in which organism?
a) Entamoeba b) plasmodium c)Anabaena d) mycoplasma
Ans- c) Anabaena
Explanation: It is a specialised cell which fix atmospheric nitrogen.
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