Class 11- Biology- chapter 2- Biological classification InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. In order to attack a host cell The virus must have the enzymes to cause the host cell to burst so that the host cell may be used as raw materials. The virus must have a particular shape that will match up with the proteins on the surface of the host cell. The virus must have the DNA or RNA key sequence to enter the host cell. The virus must have the proper enzyme to puncture the membrane of the host cell None 2. Study the following lists.List-IList-II(A) Sex hormone(I) Fertilization in Funaria(B) Cell wall breaking enzyme(II) Formation of zygophores in Rhizopus(C) Sugary mucilaginous substance(III) Formation of buds in Funaria(D) Naturally occurring growth factor(IV) Fertilization of Pteris (V) Conjugation in Spirogyra A- (II), B- (IV), C- (III), D- (II) A- (II), B- (V), C- (I), D- (III) A- (V), B- (IV), C- (III), D- (II) A- (V), B- (II), C- (IV), D- (III) None 3. Match the following lists.List-IList-II1. HIVI. Host2. PilusII. Prophage3. Virus penetrationIII. Retroviridae4. LysogenyIV. Polyhedral virus 1- iii, 2- iv, 3- i, 4- ii 1- iv, 2- iii, 3- ii, 4- i 1- i, 2- iv, 3- iii, 4- ii 1- i, 2- ii, 3- iii, 4- iv None 4. The structure(s) found in chlamydomonas but not in amoeba is/are: cell wall plastids all the above pyrenoid None 5. Highly resistant thick walled spores produced by bacterial cells during unfavourable conditions are called as Endospores Zoospores Heterocyst Gemmules None 6. It is difficult to make anti-viral drugs because Viruses are surrounded by protein coat. Viruses use the host cell as machinery to grow and divide. Viruses are one of the borderline of living and non-living state Viruses are very small in size. None 7. Bovine spongiform encephalopathy is a disease caused by prions in Sheep Potato Cow Man None 8. Thermus aquaticus is a species of bacteria found living in the hot springs in Yellowstone National Park. Hot springs typically are areas characterized by low oxygen levels, low light levels and high concentrations of sulfur and calcium carbonate.In what way do bacteria living in or near hot springs most likely make food? Through the process of photorespiration by using oxygen and light energy to produce carbon dioxide. Through the process of chemosynthesis by combining hydrogen sulfide with oxygen and carbon dioxide to make carbohydrates. Through the process of photosynthesis by using energy from the sun, water and carbon dioxide to make glucose. Through the process of radiosynthesis by using gamma radiation and melanin to create energy for growth. None 9. Methanogens can be found In a cow's stomach All of the above In swamps In marshes None 10. Select the true statements out of the following. The lichens are curious because they are composite or dual organism. All of the above. The apothecium consists of the fungal component only (e.g. Cladonia), such apothecia are called lecideine type. Parmelia, Physica, Lecanora etc. have more highly developed apothecia called Lecanorine type in which both fungal and algal components are present. None 11. Lichens are important in the studies on atmospheric pollution because they Efficiently purify the atmosphere Can cause eutrophication None of the above Are very sensitive to pollutants like 𝑆𝑂2 None 12. The absence of cell wall but the presence of Golgi body and ribosomes in a unicellular organism indicates that it belongs to Eubacteria Protista Animalia Fungi None 13. A semi-parasite relationship between the algal and fungal components of a lichen is termed as Predation None of the above Parasitism Helotism None 14. Which of the following is unicellular? Rhizopus Moss Pinus Euglena None 15. CJD caused by Virus Viroid Prion Mycoplasma None 16. Cell of Amoeba is Spherical in shape Broad shaped Indefinite in shape Spindle shaped None 17. Lichens multiply by Oidia formation Soredia formation Conidia formation Bud formation None 18. An example of tumour inducing RNA virus is Adeno virus Rous Sarcoma Simian Virus 40 40 Herpes virus None 19. Lichen do not grow in cities because of the Absence of the right type of algae and fungi SO2 pollution Lack of moisture Absence of natural habitats None 20. Why are protozoans regarded as primitive animals? They are unicellular and microscopic. None of these. Tissues, organs and organ systems are not developed in them. Both They are unicellular and microscopic. And Tissues, organs and organ systems are not developed in them. None 21. Read the following statements about four kinds of microorganisms P, Q, R, and S.(i) P converts milk into curd.(ii) Q is used for making antibiotics.(iii) R contains RNA as genetic material and causes the reduction in immunity of its host.(iv) S is used to manufacture wine and beer.Select the correct option. Q is Lactobacillus and R is yeast P is yeast and R is HIV P is Lactobacillus and Q is Penicillium Q is HIV and S is yeast None 22. Bacterial ribosomes are found On the cell wall. On endoplasmic reticulum. In the cytoplasm. On nuclear memberane. None 23. Which class of protozoa is totally parasitic? Rhizopda Sporozoa Flagellata Ciliate None 24. An algal culture is grown and two different species of protozoans A and C are inoculated into the culture which feeds on algae. For the time period during which algae is not acting as a limiting factor, protozoan A reproduces asexually once every hour and protozoan C reproduces one every 1.5 hours. The most likely observation is Both populations of protozoans will increase in size initially, but then Protozoan C will die off from the culture. The protozoans will evolve to have a mutualistic relationship. The algae will rapidly evolve to avoid predation. The algae will die off from the culture due to overfeeding. None Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.