Biological Classification

Which one is a wrong statement?

1. Haploid endosperm is typical feature of Gymnosperms.
2. Brown algae have chlorophyll a and c and fucoxanthin.
3. Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms.
4. Mucor has biflagellate zoospores.

Select the wrong statement.

1. The term ' contagium vivum fluidum' was coined by M. W. Beijerinck.
2. Mosaic disease in tobacco and AIDS in human being are caused by viruses.
3. The viroids were discovered by D.J. Ivanowsky.
4. W.M. Stanley showed that viruses could be crystallised.

In which group of organisms the cell walls form two thin overlapping shells which fit together?

1. Dinoflagellates
2. Slime moulds
3. Chrysophytes
4. Euglenoids

Pick up the wrong statement.

1. Some fungi are edible.
2. Nuclear membrane is present in Monera.
3. Cell wall is absent in Animalia.
4. Protists have photosynthetic and heterotrophic modes of nutrition.

Choose the wrong statement.

1. Morels and truffles are poisonous mushrooms.
2. Yeast is unicellular and useful in fermentation.
3. Penicillium is multicellular and produces antibiotics.
4. Neurospora is used in the study of bio-chemical genetics.

Cell wall is absent in

1. Mycoplasma
2. Nostoc
3. Aspergillus
4. Funaria.

The imperfect fungi which are decomposers of litter and help in mineral cycling belong to

1. Ascomycetes
2. Phycomycetes
3. Basidiomycetes
4. Deuteromycetes

True nucleus is absent in

1. Vaucheria
2. Volvox
3. Anabaena
4. Mucor.

Which one of the following matches is correct?

1. Mucor – Reproduction by conjugation – Ascomycetes
2. Agaricus – Parasitic fungus – Basidiomycetes
3. Phytophthora – Aseptate mycelium – Basidiomycetes
4. Alternaria – Sexual reproduction absent – Deuteromycetes

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

1. presence or absence of a well defined nucleus
2. mode of reproduction
3. mode of nutrition
4. complexity of body organisation.

Which of the following shows coiled RNA strand and capsomeres?

1. Polio virus
2. Tobacco mosaic virus
3. Measles virus
4. Retrovirus

Viruses have

1. DNA enclosed in a protein coat
2. prokaryotic nucleus
3. single chromosome
4. both DNA and RNA.

Archaebacteria differ from eubacteria in

1. cell membrane structure
2. mode of nutrition
3. cell shape
4. mode of reproduction.

Anoxygenic photosynthesis is characteristic of

1. Rhodospirillum
2. Spirogyra
3. Chlamydomonas
4. Ulva.

Which one of the following fungi contains hallucinogens?

1. Morchella esculenta
2. Neurospora sp.
3. Amanita muscaria
4. Ustilago sp.

A location with luxuriant growth of lichens on the trees indicates that the :

1. trees are very healthy
2. trees are heavily infested
3. location is highly polluted
4. location is not polluted

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

1. Blue-green algae
2. Saprophytic fungi
3. Archaebacteria
4. Eubacteria

Which one of the following is true for fungi?

1. They lack a rigid cell wall.
2. They are heterotrophs.
3. They lack nuclear membrane.
4. They are phagotrophs.

Satellite RNA are present in some :

1. Prions
2. Bacteriophages
3. Plant viruses
4. Viroids

Specialized cells for fixing atmospheric nitrogen in Nostoc are

1. heterocysts
2. hormogonia
3. nodules
4. akinetes

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

1. protista
2. algae
3. plantae
4. monera.

How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolffia

1. Four
2. Five
3. Six
4. Three

Which one of the following sets of items in the option A – D are correctly categorized with one exception in it ?

1. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Kangaroo, Koala, Wombat & Australian marsupials & Wombat \ array
2. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Typhoid, Pneumonia, Diphtheria & Bacterial diseases & Diphtheria \ array
3. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ UAA, UAG, UGA & Stop codons & UAG \ array
4. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Plasmodium, Cuscuta, Trypanosoma & Protozoan parasites & Cuscuta \ array

Which statement is wrong for viruses?

1. All are parasites.
2. All of them have helical symmetry.
3. They have ability to synthesize nucleic acids and proteins.
4. Antibiotics have no effect on them.

Maximum nutritional diversity is found in the group

1. fungi
2. animalia
3. monera
4. plantae

Nuclear membrane is absent in

1. Penicillium
2. Agaricus
3. Volvox
4. Nostoc

The cyanobacteria are also referred to as

1. protists
2. golden algae
3. slime moulds
4. blue green algae

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as

1. cyanobacteria
2. archaebacteria
3. chemosynthetic autotrophs
4. heterotrophic bacteria

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

1. Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
2. Lichen is a composite organism formed from the symbiotic association of an alga and a protozoan.
3. Yeast used in making bread and beer is a fungus.
4. Nostoc and Anabaena are examples of protista.

The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of

1. Taenia, a tapeworm
2. Wuchereria, a filarial worm
3. Rhizopus, a mould
4. Ascaris, a round worm.