Q. No.Viruses are no more "alive" than isolated chromosomes because: -
1. They require both RNA and DNA
2. They both need food molecules
3. They both require oxygen for respiration
4. Both require the environment of a cell to replicate
1. They require both RNA and DNA
2. They both need food molecules
3. They both require oxygen for respiration
4. Both require the environment of a cell to replicate
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T.O. Diener discovered a
| 1. | free infectious RNA | 2. | free infectious DNA |
| 3. | infectious protein | 4. | bacteriophage |
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After karyogamy followed by meiosis, spores are produced exogenously in
| 1. | Neurospora | 2. | Alternaria |
| 3. | Agaricus | 4. | Saccharomyces |
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One of the major compounds of the cell wall of most fungi is:
| 1. | peptidoglycan | 2. | cellulose |
| 3. | hemicelluloses | 4. | chitin |
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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How many organisms in the list given below are autotrophs ?
Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Sacharomyces, Trypanosoma, Porphyra, Wolfia
| 1. | Five | 2. | Six |
| 3. | Three | 4. | Four |
Select the wrong statement:
1. Cell wall is present in members of Fungi and Plantae
2. Mushrooms belong to Basidiomycetes
3. Pseudopodia are locomotory and feeding structures in Sporozoans
4. Mitochondria are the powerhouse of the cell in all kingdoms except monera
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Which of the following organisms are known as chief producers in the oceans?
| 1. | Dinoflagellates | 2. | Diatoms |
| 3. | Cyanobacteria | 4. | Euglenoids |
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