Biological Classification

Match List-I with List-II.

1. A-II, B-IV, C-I, D-III
2. A-I, B-III, C-II, D-IV
3. A-III, B-II, C-I, D-IV
4. A-II, B-I, C-IV, D-III

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.

Which among the following is not a prokaryote?

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

Which of the following are found in extreme saline conditions?

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

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.

Methanogens belong to

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

Cell wall is absent in

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

True nucleus is absent in

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

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

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

Specialized cells for fixing atmospheric nitrogen in Nostoc are

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

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

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

Select the correct combination of the statements (i – iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen. (iii) Chemosynthetic autotrophic bacteria synthesise cellulose from glucose. (iv) Mycoplasma lack a cell wall and can survive without oxygen. The correct statements are

1. (ii) and (iii)
2. (i), (ii) and (iii)
3. (ii), (iii) and (iv)
4. (i), (ii) and (iv)

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

1. eubacteria and archaea
2. cyanobacteria and diatoms
3. protists and mosses
4. liverworts and yeasts

Oxygenic photosynthesis occurs in

1. Oscillatoria
2. Rhodospirillum
3. Chlorobium
4. Chromatium

Bacterial leaf blight of rice is caused by a species of

1. Alternaria
2. Erwinia
3. Xanthomonas
4. Pseudomonas

Thermococcus, Methanococcus and Methanobacterium exemplify

1. bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
2. bacteria that contain a cytoskeleton and ribosomes
3. archaebacteria that contain protein homologous to eukaryotic core histones
4. archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled

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?

1. Archaea completely differ from both prokaryotes and eukaryotes.
2. Archaea completely differ from prokaryotes.
3. Archaea resemble eukarya in all respects.
4. Archaea have some novel features that are absent in other prokaryotes and eukaryotes.

Which one of the following statements about Mycoplasma is wrong?

1. They are pleomorphic.
2. They are sensitive to penicillin.
3. They cause diseases in plants.
4. They are also called PPLO.

The bacterium ( Clostridium botulinum) that causes botulism is-

1. A facultative aerobe
2. An obligate aerobe
3. A facultative anaerobe
4. An obligate anaerobe

Barophilic prokaryotes

1. grow and multiply in very deep marine sediments
2. occur in water containing high concentrations of barium hydroxide
3. readily grow and divide in sea water enriched in any soluble salt of barium
4. grow slowly in highly alkaline frozen lakes at high altitudes.

In which kingdom would you classify the archaea and nitrogen-fixing organisms, if the five-kingdom system of classification is used?

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