Biological Classification

The main criteria used for Five Kingdom Classification proposed by R.H. Whittaker (1969) included : Choose the correct answer from the options given below :

1. A, B and E only
2. A, B, C, D and E
3. B, C and D only
4. A, B, D and E only

Mad cow disease is caused by .

1. Mycoplasma sp.
2. prions
3. viroids
4. Aspergillus sp.

Symbiotic associations between fungi and algae are called .

1. chrysophytes
2. lichens
3. sponges
4. mycorrhiza

Which of the following is not a prokaryote?

1. Fungi
2. Bacteria
3. Blue green algae
4. Mycoplasma

Each of the following characteristics represents a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization. Choose the correct answer from the options given below :

1. A, C, E, D, B
2. C, E, A, B, D
3. A, C, E, B, D
4. C, E, A, D, B

Which one of the following is not a criterion for classification of fungi?

1. Morphology of mycelium
2. Mode of nutrition
3. Mode of spore formation
4. Fruiting body

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below :

1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct

Which of the following is a correct statement?

1. Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.
2. Bacteria are exclusively heterotrophic organisms.
3. Slime moulds are saprophytic organisms classified under Kingdom Monera.
4. Mycoplasma have DNA, ribosome and cell wall.

Identify the asexual reproductive structure associated with Penicillium :

1. Zoospores
2. Conidia
3. Gemmules
4. Buds

Mad cow disease in cattle and Cr Jacob disease in humans are due to infection by .

1. Prion
2. Bacterium
3. Virus
4. Viroid

Which of the following statements is correct?

1. Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells
2. Fusion of two cells is called Karyogamy
3. Fusion of protoplasm between two motile or non-motile gametes is called plasmogamy
4. Organisms that depend on living plants are called saprophytes

Which of the following is correct about viroids?

1. They have free RNA without protein coat
2. They have DNA with protein coat
3. They have free DNA without protein coat
4. They have RNA with protein coat

Which of the following statements is incorrect?

1. Infective constituent in viruses is the protein coat
2. Prions consist of abnormally folded proteins
3. Viroids lack a protein coat
4. Viruses are obligate parasites

Which of the following statement is incorrect?

1. Conidia are produced exogenously and ascospores endogenously.
2. Yeasts have filamentous bodies with long thread-like hyphae.
3. Morels and truffles are edible delicacies.
4. Claviceps is a source of many alkaloids and LSD.

Which among the following is not a prokaryote?

1. Mycobacterium
2. Saccharomyces
3. Oscillatoria
4. Nostoc

Select the wrong statement.

1. Mushrooms belong to basidiomycetes.
2. Cell wall is present in members of fungi and plantae.
3. Pseudopodia are locomotory and feeding structures in sporozoans.
4. Mitochondria are the powerhouse of the cell in all kingdoms except monera.

After karyogamy followed by meiosis, spores are produced exogenously in

1. Saccharomyces
2. Neurospora
3. Alternaria
4. Agaricus

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

1. Euglenoids
2. Cyanobacteria
3. Dinoflagellates
4. Diatoms

Ciliates differ from all other protozoans in

1. having a contractile vacuole for removing excess water
2. having two types of nuclei
3. using flagella for locomotion
4. using pseudopodia for capturing prey

Which of the following are found in extreme saline conditions?

1. Eubacteria
2. Cyanobacteria
3. Mycobacteria
4. Archaebacteria

Viroids differ from viruses in having

1. DNA molecules without protein coat
2. RNA molecules with protein coat
3. RNA molecules without protein coat
4. DNA molecules with protein coat

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?

1. Pseudomonas
2. Mycoplasma
3. Nostoc
4. Bacillus

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

1. methanogens
2. eubacteria
3. halophiles
4. thermoacidophiles.

Which one of the following statements is wrong?

1. Eubacteria are also called false bacteria.
2. Phycomycetes are also called algal fungi.
3. Cyanobacteria are also called blue-green algae.
4. Golden algae are also called desmids.

Which of the following statements is wrong for viroids?

1. They cause infections.
2. Their RNA is of high molecular weight.
3. They lack a protein coat.
4. They are smaller than viruses.

One of the major components of cell wall of most fungi is

1. cellulose
2. hemicellulose
3. chitin
4. peptidoglycan.

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the Kingdom

1. Fungi
2. Animalia
3. Monera
4. Protista.

Which one of the following is wrong for fungi?

1. They are eukaryotic.
2. All fungi possess a purely cellulosic cell wall.
3. They are heterotrophic.
4. They are both unicellular and multicellular.

Methanogens belong to

1. eubacteria
2. archaebacteria
3. dinoflagellates
4. slime moulds.

Select the wrong statement.

1. The walls of diatoms are easily destructible.
2. 'Diatomaceous earth' is formed by the cell walls of diatoms.
3. Diatoms are chief producers in the oceans.
4. Diatoms are microscopic and float passively in water.