| 1. | peptidoglycan | 2. | cellulose |
| 3. | hemicelluloses | 4. | chitin |
Which of the following statements is wrong for viroids?
1. They are smaller than viruses
2. They cause infections
3. Their RNA is of high molecular weight
4. They lack a protein coat
The imperfect fungi which are decomposers of litter and help in mineral cycling belong to?
1. Deuteromycetes
2. Basidiomycetes
3. Phycomycetes
4. Ascomycetes
Select the wrong statement:
| 1. | The viroids were discovered by D.J lvanovsky. |
| 2. | W.M. Stanley showed that viruses could be crystallized. |
| 3. | The term 'contagium vivum fluidum' was coined by MW Beijerinck. |
| 4. | Mosaic disease in tobacco and AIDS in human beings are caused by viruses. |
Cell wall is absent in:
1. Nostoc
2. Aspergillus
3. Funaria
4. Mycoplasma
Choose the wrong statement:
| 1. | Penicillium is multicellular and produces antibiotics. |
| 2. | Neurospora is used in the study of biochemical genetics. |
| 3. | Morels and truffles are poisonous mushrooms. |
| 4. | Yeast is unicellular and useful in fermentation. |
In which group of organisms the Cell walls form two thin overlapping shells which fit together?
| 1. | Chrysophytes | 2. | Euglenoids |
| 3. | Dinoflagellates | 4. | Slime moulds |
Pick up the wrong statement.
| 1. | Cell wall is absent in Animalia. |
| 2. | Protista have photosynthetic and heterotrophic modes of nutrition |
| 3. | Some fungi are edible |
| 4. | Nuclear membrane is present in Monera. |
Which of the following are most suitable indicators of SO2 pollution in the environment?
1. Lichens
2. Conifers
3. Algae
4. Fungi
Which one of the following matches is correct?
| (a) | Phytophthora | Aseptate Mycelium | Basidiomycetes |
| (b) | Alternaria | Sexual reproduction Absent | Deuteromycetes |
| (c) | Mucor | Reproduction by conjugation | Ascomycetes |
| (d) | Agaricus | Parasitic fungus | Basidiomycetes |