Please see Chapter 2 Biological Classification Exam Questions Class 11 Biology below. These important questions with solutions have been prepared based on the latest examination guidelines and syllabus issued by CBSE, NCERT, and KVS. We have provided Class 11 Biology Exam Questions and answers for all chapters in your NCERT Book for Class 11 Biology. These solved problems for Biological Classification in Class 11 Biology will help you to score more marks in upcoming examinations.
Exam Questions Chapter 2 Biological Classification Class 11 Biology
Question. Which of the following characteristic(s) is/are used by Whittaker for the classification of organisms ?
(a) Mode of nutrition
(b) Thallus organisation
(c) Phylogenetic relationships
(d) All of the above
Question. Protists are
(a) single-celled eukaryotes.
(b) multicellular eukaryotes.
(c) single-celled prokaryotes.
(d) single-celled akaryote.
Question. Which of the following is the smallest living cell and can live without oxygen?
Question. Which of the following pairs come under the group chrysophytes?
(a) Diatoms and Euglena
(b) Euglena and Trypanosoma
(c) Diatoms and Desmids
(d) Gonyaulax and Desmids
Question. Which of the following is a parasitic fungi on the mustard plant ?
Question. Which of the following is/are example(s) of deuteromycetes?
(d) All of these
Question. Bladderwort and Venus fly trap are examples of
(a) insectivorous plants
(b) parasitic plants
(c) N2 – rich plants
(d) aquatic plants
Question. Which of the following is not a viral disease ?
(a) AIDS and mumps
(b) Small pox and herpes
Question. The genetic material of virus includes
(a) only RNA.
(b) only DNA.
(c) RNA and DNA both
(d) RNA or DNA , i.e., one nucleic acid in a virus.
Question. Clamp connection is found in
Question. Which scientist classified plants into trees, shrubs and herbs and animals into two groups based on absence or presence red blood cells?
(b) R. H. Whittaker
(c) D. J. Ivanowsky
(d) W. M. Stanley
Question. The bacteria which oxidize various inorganic substances and use the released energy for the synthesis of food are called _______________.
(b) Heterotrophic bacteria
(c) Photosynthetic autotrophic bacteria
(d) Chemosynthetic autotrophic bacteria
Statement Type Questions
Question. Which of the following statements is correct for archaea?
(a) Archaea resemble eukaryotes in all respects.
(b) Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
(c) Archaea completely differ from both prokaryotes and eukaryotes.
(d) Archaea completely differ from prokaryotes.
Question. Which of the following statements is correct for both blue-green algae and bacteria ?
(a) Both show anaerobic respiration.
(b) Both have chlorophyll pigment.
(c) Both are devoid of true nucleus.
(d) None of the above
Question. Which of the following statement is/ are correct for bacteria?
(a) They are the members of the kingdom monera.
(b) They live in extreme habitats such as hot springs, deserts, snow and deep oceans.
(c) They show the most extensive metabolic diversity.
(d) All of the above
Question. Which of the following statements is correct for dinoflagellates flagella ?
(a) A single flagellum lies in the transverse groove between the cell plates.
(b) A single flagellum lies in the longitudinal groove between the cell plates.
(c) Two flagella, one lies longitudinally and the other transversely in a furrow between the wall plates.
(d) Flagella are absent.
Question. Read the given statements and answer the question.
(i) It includes unicellular as well as multicellular fungi.
(ii) In multicellular forms, hyphae are branched and septate.
(iii) Conidiophore produces conidia (spores) exogenously in chain.
(iv) Sexual spores are ascospores produced endogenously in chain.
(v) Fruiting body is called ascocarp.
Identify the correct class of fungi which have all the above given characteristics.
(b) Sac fungi
(c) Club fungi
(d) Fungi imperfecti
Question. Consider the following statements with respect to characteristic features of the kingdom.
(i) In animalia, the mode of nutrition is autotrophic.
(ii) In monera, the nuclear membrane is present.
(iii) In protista, the cell type is prokaryotic.
(iv) In plantae, the cell wall is present.
Of the above statements, which one is correct ?
(a) (i) only
(b) (ii) only
(c) (iii) only
(d) (iv) only
Question. The given characters are seen in which of the following group?
(i) Unicellular, colonial, filamentous, marine or terrestrial forms.
(ii) The colonies are surrounded by a gelatinous sheath.
(iii) Some can fix atmospheric nitrogen in specialized cells called heterocysts.
(iv) They often form blooms in water bodies.
Question. The given statements are some characters of a particular group of Kingdom protista.
(i) Most of them are fresh water organisms found in standing water.
(ii) They have a protein rich layer (called pellicle) which makes their body flexible.
(iii) They have two flagella, a short and a long one.
(iv) Though they are photosynthetic in the presence of sunlight, but in the absence of sunlight they behave like heterotrophs by predating on other smaller organisms.
Identify the correct group on the basis of these characters.
(c) Slime moulds
Question. Which of the following statement(s) is/are correct about ascomycetes ?
(i) Neurospora, which is used in biochemical and genetic work is a member of this class.
(ii) They are mostly multicellular, e.g., Yeast, or rarely unicellular, e.g., Penicillium.
(iii) They are saprophytic, decomposers, parasitic or coprophilous.
(iv) Some examples are Aspergillus, Claviceps and Neurospora.
(a) Both (i) and (ii)
(b) Only (ii)
(c) (i), (iii) and (iv)
(d) All of these
Question. Which of the following statement(s) is/are correct about class basidiomycetes ?
(i) They are commonly known as imperfect fungi because only the asexual or vegetative phases of these fungi are known.
(ii) They grow in soil, on logs and tree stumps and in living plant bodies as parasites, e.g., rusts and smuts.
(iii) The mycelium is branched and septate.
(iv) Some common members are Agaricus, Ustilago and Puccinia.
(a) Only (i)
(b) Both (ii) and (iii)
(c) (ii), (iii) and (iv)
(d) All of these
Question. Which of the following statement(s) is/are correct ?
(i) Reproduction in fungi can take place by vegetative means – fragmentation, fission and budding.
(ii) Fusion of two nuclei is called plasmogamy.
(iii) Fusion of protoplasms between two motile or nonmotile gametes is called karyogamy.
(iv) Meiosis in zygote results in diploid spores.
(a) Only (i)
(b) Both (ii) and (iii)
(c) (ii), (iii) and (iv)
(d) All of these
Assertion/Reason Type Questions
In the following questions, a statement of Assertion is followed by a statement of Reason.
(a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
(b) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.
Question. Assertion : Euglena can be placed in the plant knigdom due to the presence of chlorophyll.
Reason : Euglena cannot be classified on the basis of two kingdom system of classification.
Question. Assertion : TMV is a virus which causes mosaic disease.
Reason : TMV has RNA as genetic material.
Question. Assertion : Yeasts such as Saccharomyces cerevisiae are used in baking industry.
Reason : Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.
Matching Type Questions
Question. Match the terms given in column-I with their examples given in column-II and choose the correct option.
|A. Ascus||I. Spirulina|
|B. Basidium||II. Penicillium|
|C. Protista||III. Agaricus|
|D. Cyanobacteria||IV. Euglena|
|E. Animalia||V. Sponges|
(a) A – II, B – III, C – IV, D – V, E – I
(b) A – I, B – II, C – III, D – V, E – IV
(c) A – II, B – V, C – III, D – I, E – IV
(d) A – II, B – III, C – IV, D – I, E – V
Question. Match column I (Kingdom) with column II (Class) and select the correct options.
|A. Plantae||I. Archaebacteria|
|B. Fungi||II. Euglenoids|
|C. Protista||III. Phycomycetes|
|D. Monera||IV. Algae|
(a) A – IV, B – III, C – II, D – I
(b) A – I, B – II, C – III, D – IV
(c) A – III, B – IV, C – II, D – I
(d) A – IV, B – II, C – III, D – I
Question. Match column I (containing fungus name) with column II (common name) and choose the correct options.
|A. Puccinia||I. Yeast|
|B. Ustilago||II. Mushroom|
|C. Agaricus||III. Smut fungus|
|D. Saccharomyces||IV. Rust fungus|
(a) A – I, B – II, C – III, D – IV
(b) A – II, B – III, C – IV, D – I
(c) A – III, B – IV, C – I, D – II
(d) A – IV, B – III, C – II, D – I
Question. Match column-I (Characters/feature) with column-II (examples) and choose the correct option.
|A. Red dinoflagellates||I. Rhizopus|
|B. Unicellular fungi used to make bread and beer||II. Gonyaulax|
|C. Source of antibiotics||III. Yeast|
|D. Bread mould||IV. Penicillium|
(a) A – III, B – II, C – I, D – IV
(b) A – II, B – III, C – I, D – IV
(c) A – II, B – III, C – IV, D – I
(d) A – II, B – IV, C – III, D – I
Question. Which of the following groups of protozoan is not correctly matched with its feature?
(a) Amoeboid – Marine forms have silica shells on their surface.
(b) Flagellated – Either free living or parasitic.
(c) Ciliated – Actively moving organisms due to presence of cilia.
(d) Sporozoans – Move and capture their prey with the help of false feet.
Diagram Type Questions
Question. Refer to the given figures of bacteria cell and Nostoc and choose the option which shows correct label for the structures marked as A, B, C, D and E ?
(a) A – Cell wall, B – Cell membrane, C – Heterocyst, D – DNA, E – Mucilagenous sheath
(b) A – Cell wall, B – Cell membrane, C – DNA, D – Heterocyst, E – Mucilagenous sheath
(c) A – Mucilagenous sheath, B – Cell membrane, C – DNA, D – Heterocyst, E – Cell wall
(d) A – Cell membrane, B – Cell wall, C – DNA, D – Heterocyst, E – Mucilagenous sheath
Question. Identify the figures A, B and C given below.
(a) A – Euglena, B – Paramecium, C – Agaricus
(b) A – Euglena, B – Planaria, C – Agaricus
(c) A – Planaria, B – Paramecium, C – Agaricus
(d) A – Euglena, B – Paramecium, C – Aspergillus
Question. The given figure shows the structure of filamentous blue green algae. Nostoc with a structure marked as “X”. Select the option which shows the correct identification of “X” with its feature.
(a) Spores – Reproduction
(b) Heterocysts – Nitrogen fixation
(c) Pellicle – Recycling of nutrition
(d) Mucilaginous sheath – Photosynthesis
Critical Thinking Type Questions
Question. Bacteria lack alternation of generation because there is
(a) neither syngamy nor reduction division.
(b) no distinct chromosomes.
(c) no conjugation.
(d) no exchange of genetic material.
Question. A virus can be considered a living organism because it
(a) responds to touch stimulus
(c) reproduces (inside the host)
(d) can cause disease
Question. When a moist bread is kept exposed in air, it becomes mouldy and black because
(a) spores are present in the water.
(b) spores are present in the bread.
(c) spores are present in the air.
(d) the bread decomposes.
Question. Ustilago causes plant diseases (called smuts) because
(a) they parasitize on cereals.
(b) they lack mycelium.
(c) they develop sooty masses of spores.
(d) their affected parts becomes completely black.
Question. Which of the following organisms is\are correctly assigned its/their taxonomic group?
(a) Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
(b) Lichen is a composite organism formed from the symbiotic association of an alga and a protozoan.
(c) Yeast used in making bread and beer is a fungus.
(d) Nostoc and Anabaena are examples of protista.
Question. Food can be kept for a longer time in cold house than in normal conditions because
(a) insect cannot enter.
(b) bacterial multiplication stops.
(c) bacterial multiplication is reduced.
(d) there is plasmolysis at low temperature.
Question. The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are categorised as
(c) chemosynthetic autotrophs
(d) heterotrophic bacteria
Question. How many bacteria are produced in four hours if a bacterium divides once in half an hour ?
Question. Assume that two normal hyphal cells of different fungal mating types unite. After a period of time, the cell between these cells will dissolve producing a
(b) fruiting body
(d) dikaryotic cell, which is also heterokaryotic
Question. Bacteria and yeast are similar in all the following features except that
(a) both are unicellular.
(b) both are prokaryotes.
(c) both are capable of causing fermentation.
(d) both produce spores.
Question. An “X” reproduces in such a great numbers that the water may appear, producing a red tides and kills large marine animals like “Z”. “X” belongs to “Y”. Identify “X”, “Y” and “Z”.
(a) X – Gonyaulax ; Y – Dinoflagellates; Z – Fishes
(b) X – Paramecium ; Y – Protozoa ; Z -Crocodiles
(c) X – Trypanosoma ; Y – Protozoa ; Z – Frogs
(d) X – Plasmodium ; Y – Euglenoids ; Z – Oysters
Question. Which class of fungi lacks sex organs but the process of plasmogamy is brought about by fusion of two vegetative or somatic cells of different strains or genotypes?
(a) Sac fungi
(b) Bracket fungi
(c) Imperfect fungi
Question. A scientist “X” demonstrated that extract of infected plants of “Y” could cause infection in healthy plants and called the fluid as “Contagium vivum fluidum”.
Identify X and Y.
|(a) W. M. Stanley||Potato|
|(b) M. W. Beijerinek||Tobacco|
|(c) D. J. Ivanowsky||Cauliflower|