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Viroids are  (A) parasitic DNA (B) ...

Viroids are 
(A) parasitic DNA
(B) free RNA
(C) free DNA
(D) none of these

A

parasitic DNA

B

free RNA

C

free DNA

D

none of these

Text Solution

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The correct Answer is:
B
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KUMAR PRAKASHAN-BIOLOGICAL CLASSIFICATION-OBJECTIVE SECTION (MULTIPLE CHOICE QUESTIONS : (MCQs))
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  2. All single-celled eukaryotes are placed under  (A) Fungi (B) Proti...

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  3. The spores of slime moulds possess  (A) False walls (B) True wall...

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  4. The sea appears red due to rapid multiplication of  (A) Euglenoids ...

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  5. What is true for all protozoans ? (A) are heterotrophs (B) they a...

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  6. Chrysophytes which are the chief producers in the ocean?

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  7. Sleeping sickness is caused by  (A) Wuchereria (B) Amoeba (C) ...

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  8. Which is the parasitic fungi on mustard ? (A) Rhizopus (B) Mucor ...

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  9. Amoeboid protozoans are found in

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  10. Fungus used extensively in biochemical and genetic work  (A) Neurosp...

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  11. Which fungi is commonly known as imperfect fungi? (A) Basidiomycetes...

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  12. Viroids are  (A) parasitic DNA (B) free RNA (C) free DNA (D...

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  13. Which of the following is indicator of pollution ?  (A) Viroids (...

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  14. Colletotrichum belongs to  (A) Deuteromycetes (B) Ascomycetes ...

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  15. Rusts and smuts belongs to  (A) Deuteromycetes (B) Basidiomycetes...

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  16. A: Rhizopus does not form zygospores R: It shows heterothallism

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  17. A: A virus attacking a bacterium is called bacteriophage. R: A virus...

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  18. A: Bacteria, cyanobacteria and mycoplasma are prokaryotes R : Prokar...

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  19. A : Phycomycetes are generally called algal fungi. R: It is believed...

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  20. A : Mushrooms are not regarded plants. R : Unlike plants mushrooms a...

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