Chapter: Biological Classification

Which of the following statement is correct?

The size of Pleuropneumonia Like Organism (PPLO) is

Which of the following is incorrect about cyanobacteria?

Oxygen is not produced during photosynthesis by

Which of the following organisms are known as chief producers in the oceans?

Which of the following are found in extreme saline conditions?

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

The primitive prokaryotes responsible for the production of biogas from the dung of ruminantanimals, include the

Which one of the following statements is wrong?

Methanogens belong to

Chromatophores take part in

Archaebacteria differ from eubacteria in

Besides paddy fields, cyanobacteria are also found inside vegetative part of

Pigment-containing membranous extensions in some cyanobacteria are

Which of the following are likely to be present in deep sea water?

The cyanobacteria are also referred to as

Nuclear membrane is absent in

In eubacteria, a cellular component that resembles eukaryotic cells is

Organisms called methanogens are most abundant in a

A prokaryotic autotrophic nitrogen fixing symbiont is found in

Maximum nutritional diversity is found in the group

Some hyperthermophilic organisms that grow in highly acidic habitats belong to the twogroups called

Thermococcus, Methanococcus and Methanobacterium exemplify

Bacterial leaf blight of rice is caused by a species of

Which one of the following statements about Mycoplasma is wrong?

Barophillic prokaryotes

A free living nitrogen fixing cyanobacterium which can also form symbiotic association with thewater fern Azolla is

Chromosomes in a bacterial cell can be 1-3 in number and

Organisms which obtain energy by the oxidation of reduced inorganiccompounds are called

In bacteria, plasmid is

What is true for archaebacteria?

What is true for cyanobacteria?

What is true for photolithotrophs?

Photosynthetic bacteria have pigments in

A few organisms are known to grow and multiply at temperatures of 100-105°C. They belong to

The hereditary material present inthe bacterium Escherichia coli is

Bacterium divides every 35 minutes. If a culture containing 10⁵ cells per mL is grown for 175minutes, what will be the cell concentration per mL after 175 minutes?

The site of respiration in bacteria is

In bacterial chromosomes, the nucleic acid polymers are

Sex factor in bacteria is

The plasmid

Temperature tolerance of thermal blue-green algae is due to

Escherichia coli is used extensively in biological research as it is

Genophore bacterial genome or nucleoid is made of

Bacteria lack alternation of generation because there is

Which one belongs to the Monera?

Ciliates differ from all other protozoans in

Chrysophytes, euglenoids, dinoflagellates and slime moulds are included in the kingdom

Select the wrong statement.

Pick up the wrong statement.

In which group of organisms thecell walls form two thinoverlapping shells which fittogether?

What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?

Auxospores and hormocysts areformed respectively by

Which of the following unicellularorganism has a macro-nucleus fortrophic function and one or moremicro-nuclei for reproduction?

When a freshwater protozoanpossessing a contractile vacuole isplaced in a glass containingmarine water, the vacuole will

The chief advantage ofencystment to an Amoeba is

In which animal, dimorphicnucleus is found?

Extranuclear inheritance occurs in

Which of the following organismspossesses characteristics of botha plant and an animal?

Macro and micronucleus are thecharacteristic feature of

When a freshwater protozoanpossessing a contractile vacuole,is placed in a glass containingmarine water, the vacuole will

In Protozoa like Amoeba andParamecium, an organelle isfound for osmoregulation which is

Excretion in Amoeba occurs through

Protistan genome has

Entamoeba coli causes

Protists obtain food as

African sleeping sickness is due to

In Amoeba and Parameciumosmoregulation occurs through

Genetic information inParamecium is contained in

Plasmodium, the malarial parasite,belongs to class

What is true about Trypanosoma?

Trypanosoma belongs to class

Select the wrong statement.

Which of the following wouldappear as the pioneer organismson bare rocks?

One of the major components ofcell wall of most fungi is

Which one of the following iswrong for fungi?

Choose the wrong statement.

The imperfect fungi which aredecomposers of litter and help inmineral cycling belong to

The highest number of species inthe world is represented by

Which one of the following has haplontic life cycle?

Which one is the wrong pairing for the disease and its causalorganism?

Trichoderma harzianum hasproved a useful microorganismfor

Cellulose is the major componentof cell walls of

Which of the following is a slimemold?

Ergot of rye is caused by a speciesOf

Which pair of the followingbelongs to Basidiomycetes?

The thalloid body of a slime mold(Myxomycetes) is known as

Which of the followingenvironmental conditions areessential for optimum growth ofMucor on a piece of bread?
(i) Temperature of about 25°C
(ii) Temperature of about 5°C
(iii) Relative humidity of about 5%
(iv) Relative humidity of about 95%
(v) A shady place
(vi) A brightly illuminated place
Choose the answer from thefollowing options

There exists a close associationbetween the alga and the funguswithin a lichen. The fungus

Lichens are well knowncombination of an alga and afungus where fungus has

During the formation of bread itbecomes porous due to therelease of CO₂ by the action of

Which fungal disease spreads byseed and flowers?

Plant decomposers are

Adhesive pad of fungi penetratesthe host with the help of

In fungi stored food material is

Black rust of wheat is caused by

Which of the following is the use oflichens in case of pollution?

Columella is a specialisedstructure found in the sporangiumof

Puccinia forms

Most of the lichens consist of

Which one of the following is nottrue about lichens?

Which of the following is notcorrectly matched?

The chemical compoundsproduced by the host plants toprotect themselves against fungalinfection is

White rust disease is caused by

Ustilago caused plant diseases arecalled smuts because

Mycorrhiza represents

Absorptive heterotrophic nutritionis exhibited by

Lichens indicate SO₂ pollutionbecause they

Which of the following statementsabout inclusion bodies isincorrect?

Which of the following statementsis incorrect?

Viroids differ from viruses inhaving

Which of the following statementsis wrong for viroids?

Select wrong statement.

Which of the following showscoiled RNA strand andcapsomeres?

Which statement is wrong forviruses?

Virus envelope is known as

TO Diener discovered a

Viruses that infect bacteria,multiply and cause their lysis arecalled

Which of the following statementsis not true for retroviruses?

Viruses are no more ‘alive’ thanisolated chromosomes because

Which one of the followingstatements about viruses iscorrect?

Tobacco mosaic virus is a tubularfilament of size

Interferons are synthesised inresponse to

Cauliflower mosaic virus contains

Which one of the followingstatements about viruses iscorrect?

Influenza virus has

Tobacco Mosaic Virus (TMV) genesare