Home
Class 11
BIOLOGY
Difference between virus and viroid is  ...

Difference between virus and viroid is 
(A) absence of protein coat in viroid, but present in virus.
(B) presence of low molecular weight RNA in virus, but absent in viroid
(C) Both (A) and (B)
(D) None of the above

A

absence of protein coat in viroid, but present in virus.

B

presence of low molecular weight RNA in virus, but absent in viroid

C

Both (A) and (B)

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
A
Virus contains DNA or RNA as genetic material and a protein coat, whereas viroids have no protein coat, but only RNA as their nucleic acid. This is the reason why viroids are carried inside viruses. e.g. hepatitis-D is a viroid that is carried in the capsid of hepatitis-B virus.
Promotional Banner

Topper's Solved these Questions

  • BIOLOGICAL CLASSIFICATION

    KUMAR PRAKASHAN|Exercise SECTION - E (SOLUTION OF NCERT EXEMPLAR)(VERY SHORT ANSWER TYPE QUESTIONS : (VSQs))|15 Videos

  • BIOLOGICAL CLASSIFICATION

    KUMAR PRAKASHAN|Exercise SECTION - E (SOLUTION OF NCERT EXEMPLAR)(SHORT ANSWER TYPE QUESTIONS )|5 Videos

  • BIOLOGICAL CLASSIFICATION

    KUMAR PRAKASHAN|Exercise SECTION - D (TEXTBOOK EXERCISE)|12 Videos

  • ANIMAL KINGDOM

    KUMAR PRAKASHAN|Exercise OBJECTIVE SECTION (FILL IN THE BLANKS)|10 Videos

  • BIOMOLECULES

    KUMAR PRAKASHAN|Exercise QUESTION PAPER (DESCRIBE IN DETAIL):|1 Videos

Similar Questions

Explore conceptually related problems

External fertilization is seen in (A) bony fishes (B) frogs (C) Both (A) and (B) (D) none of the above

Silencing of a gene could be achieved through the use of (A) RNAi only (B) Antisense RNA only (C) By both (A) and (b) (D) None of these

The ministry of forest and environment has initiated which action plan to save rivers from pollution ? (A) Ganga action plan (B) Yamuna action plan (C) Both (A) and (B) (D) None of the above

Identify the infections agent on the basis of give information- * Discovered T.O. Diener * Smaller than viruses * Low molecular weight RNA * Absence of protein coat

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

Which of the following is indicator of pollution ? (A) Viroids (B) Virus (C) Lichens (D) Algae

(A)It causes potato spindle tuber disease. (B) It is free RNA (C) Molecular weight of RNA is low (D) Infectious agent, smaller than viruses The above statements are assigned to :-

In bisexual flower physical barrier between anther and stigma is called (A) herkogamy (B) heterostyly (C) dichogamy (D) None of the above

Which virus is responsible for biotic control of insects and arthropods? (A) Myxovirus (B) Retrovirus (C) Bactariophage virus (D) Baculovirus

Assertion X: Baculo virus produces disease in insects and arthropoda Assertion Y: Baculo virus is biocontroller and belongs to Nucleopolyhedrovirus genera (A) X and Y both are true (B) X is true, Y is false (C) X is false, Y is true (D) X and Y both are false