NEET Biology Biological Classification MCQs Set D

Question: Endospores formed by certain bacteria are actually the means for

• a) Perennation
• b) Bioluminescence
• c) Red snow formation
• d) Reproduction

Answer: Perennation

Question: Select an incorrect statement for F⁺ bacteria

• a) Only somatic pili are present
• b) It cannot conjugate with another F⁺ form
• c) It is considered as donor bacterium
• d) It has F plasmid

Answer: Only somatic pili are present

Question: Sea water glows during night mainly due to occurrence of

• a) Noctiluca
• b) Euglena
• c) Cyclotella
• d) Gonyaulax

Answer: Noctiluca

Question: Rejuvenescent spore of diatom is

• a) Diploid and auxospore
• b) Diploid and statospore
• c) Haploid and exospore
• d) Haploid and statospore

Answer: Diploid and auxospore

Question: Leucosin (Chrysolaminarin) is a carbohydrate which is stored as reserve food in case of

• a) Diatom
• b) Euglena
• c) Dinoflagellates
• d) Paramecium

Answer:  Diatom

Question: Flagellation in Euglena is

• a) Heterokont and stichonematic
• b) Isokont and whiplash type
• c) Uniflagellation and stichonematic
• d) Heterokont and whiplash type

Answer: Heterokont and stichonematic

Question: Special type of red pigment present in the eye-spot of Euglena and Crustacea is called

• a) Astaxanthin
• b) Phycoerythrin
• c) Carotene
• d) Xanthophyll

Answer: Astaxanthin

Question:  Paraflagellar body of Euglena helps in

• a) Photoreception
• b) Locomotion
• c) Reproduction
• d) Osmoregulation

Answer: Photoreception

Question: The structure formed in the life cycle of cellular slime-mould due to chemotactic movement is

• a) Pseudoplasmodium
• b) Swarm cells
• c) Macrocyst
• d) Capillitia

Answer: Pseudoplasmodium

Question: Myxamoeba are formed in the life cycle of

• a) Physarum
• b) Amoeba
• c)  Entamoeba
• d) Diatoms

Answer: Physarum

Question: Difference between a red sea and red tide is

• a) Associated with a cyanobacteria and protist respectively
• b) Red tide takes place in red sea
• c) One is by virus and other by bacteria
• d) Associated with Rhodophyceae and diatoms respectively

Answer: Associated with a cyanobacteria and protist respectively

Question:  Consider the following statements and select correct set of features w.r.t. the life cycle of acellular slime moulds

a. Haploid vegetative stage as myxamoebae
b. Diploid vegetative stage as plasmodium
c. Capillitium
d. Photosynthetic protists
e. Sporic meiosis
f. Isogamous sexual reproduction
g. Anisogamous sexual reproduction with zygotic meiosis

• a) b, c, e, f
• b) b, d, e, f
• c) b, c, g
• d) a, c, g

Answer:  b, c, e, f

Question:

• a) a(ii), b(v), c(iv), d(iii)
• b) a(ii), b(iii), c(i), d(iv)
• c) a(ii), b(v), c(iv), d(i)
• d) a(ii), b(iii), c(i), d(v)

Answer:  a(ii), b(v), c(iv), d(iii)

Question:

• a) Albugo candida - Facultative parasite
• b) Mucor mucedo - Coprophilous
• c) Agaricus bisporus - Edible basidiocarp
• d) Puccinia graminis - Black rust fungi

Answer: Albugo candida - Facultative parasite

Question: Fungi differs from bacteria in

• a) Flagella structure
• b) Mode of nutrition
• c) Having NAG in cell wall
• d) Reserve food material as glycogen

Answer: Flagella structure

Question: Fruiting body in Aspergillus (or Penicillium) is known as

• a) Cleistothecium
• b) Apothecium
• c) Perithecium
• d) Ascus

Answer: Cleistothecium

Question:  The famous Irish famine is related to a disease of potato known as

• a) Late blight of potato
• b) Early blight of potato
• c) Dry rot of potato
• d) Potato scab

Answer: Late blight of potato

Question: A dolipore septum is a characteristic feature of

• a) Basidiomycetes
• b) Ascomycetes
• c) Phycomycetes
• d) Zygomycetes

Answer: Basidiomycetes

Question: Which one of the following combination of characters is correct for the given fungal group?

• a) Sac fungi : Septate mycelium, Ascogonium, Crozier stage, meiospores as ascospores, shorter dikaryophase
• b) Club fungi : Shorter primary mycelium stage, No sex organs, dominant dikaryophase, zygosporic meiosis
• c) Conjugating : Septate mycelium, chitinous cell wall, sporangiospore, shorter (n + n) phase
• d) Algal fungi : Coenocytic, cellulosic wall, zoospore, zygospore, dikaryophase present

Answer: Sac fungi : Septate mycelium, Ascogonium, Crozier stage, meiospores as ascospores, shorter dikaryophase

Question: Find set of edible basidiocarps.

• a) Agaricus, Pleurotus
• b) Agaricus, Morchella
• c) Volvariella, Tuber
• d) Amanita, Morchella

Answer:  Agaricus, Pleurotus

More Questions..............................

Question:

• a) Only b & c are correct
• b) Only c is correct
• c) All are correct
• d) Only a & c are correct

Answer: Only b & c are correct

Question: Symptom not seen in plants due to viruses is

• a) Root knot
• b) Yellowing, vein clearing
• c) Leaf rolling and curling
• d) Mosaic formation

Answer: Root knot

Question: Viruses possess all the following properties, except

• a) Possess both DNA and RNA
• b) Have inert crystalline structure outside living cells
• c) They are non-cellular organisms
• d) Capsid protects nucleic acid

Answer:  Possess both DNA and RNA

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:   Read the following statements carefully and identify correct statements w.r.t. Lichens

a. The association cannot tolerate air pollution, especially due to sulphur dioxide
b. Lichens are annuals and their growth is slow
c. The fungal partner mostly belongs to ascomycetes.
d. Soredia are most efficient means of asexual reproduction
e. Orchids seldom occur without this association
f. Foliose lichens are pioneers of succession in a water body.

• a) a, c, d
• b) a, b, e
• c) a, c, d, f
• d) c, d, f

Answer:  a, c, d

Question:

• a)

  

• b)

  

• c)

  

• d)

  None of these

Answer:

Question: The guts of cow and buffalo possess

• a) Methanogens
• b) Chlorella spp.
• c) Fucus spp.
• d) Cyanobacteria

Answer: Methanogens

Question: Five kingdom system of classification suggested by R.H. Whittaker is not based on

• a) Presence or absence of a well defined nucleus
• b) Mode of reproduction
• c) Mode of nutrition
• d) Complexity of body organisation

Answer: Presence or absence of a well defined nucleus

Question: Archaebacteria differ from eubacteria in

• a) Cell membrane structure
• b) Cell shape
• c) Mode of nutrition
• d) Mode of reproduction

Answer:  Cell membrane structure

Question: Which of the following shows coiled RNA strand and capsomeres?

• a) Tobacco mosaic virus
• b) Measles virus
• c) Retrovirus
• d) Polio virus

Answer: Tobacco mosaic virus

Question: Viruses have

• a) DNA enclosed in a protein coat
• b) Single chromosome
• c) Prokaryotic nucleus
• d) Both DNA and RNA

Answer: DNA enclosed in a protein coat

Question: The motile bacteria are able to move by:

• a) Flagella
• b) Cilia
• c) Pili
• d) Fimbriae

Answer: Flagella

Question: Pigment-containing membranous extensions in some cyanobacteria are

• a) Chromatophores
• b) Heterocysts
• c) Pneumatophores
• d) Basal bodies

Answer: Chromatophores

Question: Which statement is wrong for viruses?

• a) All of them have helical symmetry
• b) All are parasites
• c) Antibiotics have no effect on them
• d) They have ability to synthesize nucleic acids and proteins

Answer: All of them have helical symmetry

Question: The cyanobacteria are also referred to as

• a) Blue green algae
• b) Protists
• c) Slime moulds
• d) Golden algae

Answer: Blue green algae

Question: Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?

• a) Yeast used in making bread and beer is a fungus
• b) Nostoc and Anabaena are examples of protista
• c) Paramecium and Plasmodium belong to the same kingdom as that of Penicillum
• d) Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan

Answer:   Yeast used in making bread and beer is a fungus

Question:  How many organisms in the list given below are autotrophs?

Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolfia

• a) Six
• b) Three
• c) Five
• d) Four

Answer: Six

Question: In the five-kingdom classification, Chlamydomonas and Chlorella have been included in

• a) Protista
• b) Algae
• c) Plantae
• d) Monera

Answer: Protista

Question: Agarose extracted from sea weeds finds use in

• a) Gel electrophoresis
• b) Spectrophotometry
• c) Tissue Culture
• d) PCR

Answer: Gel electrophoresis

Question: Which one of the following organisms is not an example of eukaryotic cells?

• a) Escherichia coli
• b) Amoeba proteus
• c) Paramecium caudatum
• d) Euglena viridis

Answer: Escherichia coli

Question: Membrane-bound organelles are absent in

• a) Streptococcus
• b) Chlamydomonas
• c) Saccharomyces
• d) Plasmodium

Answer: Streptococcus

Question: Single-celled eukaryotes are included in

• a) Protista
• b) Fungi
• c) Archaea
• d) Monera

Answer: Protista

Question: Virus envelope is known as

• a) Capsid
• b) Virion
• c) Nucleoprotein
• d) Core

Answer: Capsid

Question: Algae have cell wall made up of

• a) Cellulose, galactans and mannans
• b) Pectins, cellulose and proteins
• c) Hemicellulose, pectins and proteins
• d) Cellulose, hemicellulose and pectins

Answer: Cellulose, galactans and mannans

Question: Some hyperthermophilic organisms that grow in highly acidic (pH^–2) habitats belong to the two groups

• a) Eubacteria and archaea
• b) Protists and mosses
• c) Liverworts and yeasts
• d) Cyanobacteria and diatoms

Answer:  Eubacteria and archaea

Question: Infectious proteins are present in

• a) Prions
• b) Viroids
• c) Gemini viruses
• d) Satellite viruses

Answer: Prions

Question: Black (stem) rust of wheat is caused by

• a) Puccinia graminis
• b) Xanthomonas oryzae
• c) Ustilago nuda
• d) Alternaria solani

Answer:  Puccinia graminis

Question: Select the correct combination of the statements (a-d) regarding the characteristics of certain organisms

(a) Methanogens are Archaebacteria which produce methane in marshy areas.
(b) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen.
(c) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
(d) Mycoplasma lack a cell wall and can survive without oxygen.
The correct statement are

• a) (a), (b), (d)
• b) (b), (c), (d)
• c) (a), (b), (c)
• d) (b), (c)

Answer: (a), (b), (d)

Question: Which one is the wrong pairing for the disease and its causal organism?

• a) Late blight of potato – Alternaria solani
• b) Root-knot of vegetables – Meloidogyne
• c) Loose smut of wheat – Ustilago nuda
• d) Black rust of wheat – Puccinia graminis

Answer:  Late blight of potato – Alternaria solani

Question: Which of the following is a symbiotic nitrogen fixer

• a) Frankia
• b) Azolla
• c) Glomus
• d) Azotobacter

Answer: Frankia

Question: Thermococcus,Methanococcus and Methano--bacterium exemplify

• a) Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled
• b) Archaebacteria that contain protein homologous to eukaryotic core histones
• c) Bacteria that contain a cytoskeleton and ribosomes
• d) Bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria

Answer:  Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled

Question: Bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria

• a) Pythium
• b) Xanthomonas
• c) Pseudomonas
• d) Saccharomyces

Answer: Pythium

Question: In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements is true about archaea?

• a) Archaea have some novel features that are absent in other prokaryotes and eukaryotes
• b) Archaea completely differ from both prokaryotes and eukaryotes
• c) Archaea resemble eukarya in all respects
• d) Archaea completely differ from prokaryotes

Answer: Archaea have some novel features that are absent in other prokaryotes and eukaryotes

Question:  Bacterial leaf blight of rice is caused by a species of

• a) Xanthomonas
• b) Erwinia
• c) Pseudomonas
• d) Alternaria

Answer: Xanthomonas

Question: Which one of the following is a slime mould?

• a) Physarum
• b) Thiobacillus
• c) Rhizopus
• d) Anabaena

Answer: Physarum

Question: Which one of the following statements about Mycoplasma is wrong?

• a) They are pleomorphic
• b) They cause disease in plants
• c) They are also called PPLO
• d) They are sensitive to penicillin

Answer:  They are pleomorphic

Question: Biological organisation starts with

• a) Submicroscopic molecular level
• b) Organismic level
• c) Atomic level
• d) Cellular level

Answer: Submicroscopic molecular level

Question: They are sensitive to penicillin

• a) Birds’ nest fungi and Pufballs
• b) Peziza and Stink horns
• c) Morchella and Mushrooms
• d) Pufballs and Claviceps

Answer: Birds’ nest fungi and Pufballs

Question:  Ergot of rye is caused by a species of:

• a) Claviceps
• b) Phytophthora
• c) Uncinula
• d) Ustilago

Answer: Claviceps

Question: The thalloid body of a slime mould (Myxomycetes) is known as

• a) Plasmodium
• b) Fruiting bodyMycelium
• c) Mycelium
• d) Protonema

Answer: Plasmodium

Question: Capillitium is present in the sporangium of

• a) Physarum
• b) Navicula
• c) Polysphondylium
• d) Dictyostelium

Answer: Physarum

Question: Which one of the following is true for fungi?

• a) They are heterotrophs
• b) They are phagotrophs
• c) They lack a rigid cell wall
• d) They lack nuclear membrane

Answer: They are heterotrophs

Question:  When there are two haploid nuclei per cell in some fungi before the formation of diploid, this stage is called

• a) Dikaryophase
• b) Dikaryote
• c) Diplophase
• d) Diplotene

Answer: Dikaryophase

Question: Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

• a) Downy mildew of grapes
• b) Black rust of wheat
• c) Bacterial leaf blight of rice
• d) Loose smut of wheat

Answer: Downy mildew of grapes

Question:  The black rust of wheat is a fungal disease caused by

• a) Puccinia graminis tritici
• b) Cleviceps purpurea
• c) Albugo candida
• d) Ustilago nuda

Answer: Puccinia graminis tritici

Question: The smut of maize is caused by

• a) Ustilago maydis
• b) Ustilago hordei
• c) Ustilago nuda
• d) Ustilago avenae

Answer: Ustilago maydis

Question:  Puccinia forms uredia and

• a) Telia on wheat leaves
• b) Pycnia on barberry leaves
• c) Aecia on barberry leaves
• d) Aecia on wheat leaves

Answer: Telia on wheat leaves

Question: Columella is a specialized structure found in the sporangium of

• a) Rhizopus
• b) Penicillium
• c) Ulothrix
• d) Spirogyra

Answer: Rhizopus

Question: Dikaryotisation occurs in Puccinia on

• a) Upper surface of Barberry leaf
• b) Lower surface of Barberry leaf
• c) Lower surface of wheat leaf
• d) Upper surface of wheat leaf

Answer:  Upper surface of Barberry leaf

Question: Adhesive pad of fungi penetrate the host with the help of

• a) Mechanical pressure and enzymes
• b) Hooks and suckers
• c) Only by mechanical pressure
• d) Softening by enzymes only

Answer: Mechanical pressure and enzymes

Question: Which fungal disease spreads by seed and flowers?

• a) Loose smut of wheat
• b) Covered smut of barley
• c) Corn smut
• d) Soft rot of potato

Answer: Loose smut of wheat

Question: Which of the following secrete toxins during storage conditions of crop plants?

• a) Aspergillus
• b) Penicillium
• c) Fusarium
• d) Colletotrichum

Answer: Aspergillus

Question: Mycorrhiza exhibits the phenomenon of

• a) Symbiosis
• b) Parasitism
• c) Antagonism
• d) Endemism

Answer: Symbiosis

Question: Mycorrhiza is correctly described as

• a) Symbiotic relationship between fungi and roots of higher plants
• b) Parasitic association between roots and some fungi
• c) Symbiosis of algae and fungi
• d) Relation of ants with the stem of some trees

Answer: Symbiotic relationship between fungi and roots of higher plants

Question: VAM is an example of

• a) Endomycorrhiza
• b) Ectoparasitism
• c)  Endoparasitism
• d) Ectomycorrhiza

Answer: Endomycorrhiza