Multiple Choice QuestionsAbsence of protein coat in viroid but present in virus
Presence of low molecular weight RNA in virus but absent in viroid
Both a and b
None of the above
With respect to fungal sexual cycle, choose the correct sequence of events
Karyogamy, Plasmogamy and Meiosis
Meiosis, Plasmogamy and Karyogamy
Plasmogamy, Karyogamy and Meiosis
Meiosis, Karyogamy and Plasmogamy
Viruses are non-cellular organisms but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong to?
Monera
Protista
Fungi
None of the above
i. Aquatic habitats
ii. On decaying wood
iii. Moist and damp places
iv. As obligate parasites on plants
Choose from the following options
None of the above
i and iv
ii and iii
All of the above
Short Answer TypeWhat is the principle underlying the use of cyanobacteria in agricultural fields for crop improvement?
Suppose you accidentally find an old preserved permanent slide without a label. In your effort to identify it, you place the slide under microscope and observe the following features:
a. Unicellular
b. Well defined nucleus
c. Biflagellate–one flagellum lying longitudinally and the other transversely.
What would you identify it as? Can you name the kingdom it belongs to?
Long Answer TypeIn two kingdom classification, there was no differentiation between the eukaryotes and prokaryotes, unicellular and multicellular and photosynthetic and non-photosynthetic organisms. In the two-kingdom classification the bacteria, blue-green algae, fungi, mosses all were included under the kingdom Plantae. It placed together groups which widely differed from each other. A large number of organisms did not fall into any category. Thus, the two-kingdom classification was insufficient and inadequate.
The five kingdom classification resolved the issues as it considered other factors like cell structure, mode of nutrition, thallus organisation, reproduction and phylogenetic relationships. This system of classification placed the organisms into five different categories. All the prokaryotes were placed under Kingdom Monera. The unicellular eukaryotes were placed under Kingdom Protista. The fungi occupied a separate kingdom. Thus, it proved to be adequate and much better than the two-Kingdom classification.
Short Answer TypeThe common name of pea is simpler than its botanical (scientific) name Pisum sativum. Why then is the simpler common name not used instead of the complex scientific/ botanical name in biology?
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