Biological Classification

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.