Home
Class 11
BIOLOGY
Read the given statements that describe ...

Read the given statements that describe certain infectious particle.
(i) It was discovered T.O. Diener and was found to be smaller than viruses.
(ii) It causes potato spindle tuber disease.
(iii) It is a free RNA particle which lacks the protein coat.
(iv) It has low molecular weight RNA as genetic material.
Which of the following is referred to here?

A

Virus

B

Viroid

C

Virion

D

Bacteriophage

Text Solution

Verified by Experts

The correct Answer is:
B
NA
Promotional Banner

Similar Questions

Explore conceptually related problems

The given statements describe a group of organisms. (i) Instead of a cell wall they have a protein rich pellicible making their body flexible. (ii) They have 2 flagella, a short and a long one. (iii) They show mixotrophic nutrition (iv) They are connecting link between plants and animals. which of the following groups is referred to here?

Read the following statements. (i) In mitotic cell division chromosome number is halved. (ii) Centromere is the point where two sister chromatids are held together. (iii) The period between two successive mitotic divisions is known as telophase. (iv) In G_(1) phase of cell cycle protein and RNA are synthesised. Which of the above given statements are correct?

Which of the following statements regarding viruses are correct? (i) These are cellular, infectious, nucleoprotein particles. (ii) They can be grown in culture medium. (iii) Genetic material is either DNA or RNA, but never both. (iv) They can be crystallised.

Read the following statements and select the option which identifies the incorrect ones. (i) Potato spindle tuber disease and Chrysanthermum stunt disease are caused by viroids. (ii) T_(4) bacteriophage exhibits lytic cycle. (iii) Retroviruses have two copies of ssRNA. (iv) Interferous which prevent viral multiplication are glycolipid particles.

Read the given statements and select the option that correctly sorts these with respect to A and B in the given flow chart. (i) Molecular weight ranging from 18 to 800 daltons (Da) approximately (ii) Proteins, nucleic acids, polysaccharides and lipids (iii) Contain chemicals that have molecular weight more than 800 Da (iv) Has monomers (v) Generally has polymers

Which of the following statements is/are not correct for single cell protein (SCP)? (i) The biomass is obtained from unicellular microorganisms only. (ii) It provides a protein rich supplement. (iii) They can be grown easily on materials like waste water from potato processing plants, straw, manure, sewage, etc. (iv) It helps to minimise environmental pollution. (v) SCP has to be processed before use.