Question

RNA is genetic material __
A) Bacteria
B) cyanobacteria
C) Bacteriophage
D) Plant viruses

Answer 1

Hint:Genetic material can be defined as any material which carries genetic information which can be passed from one generation to another. There are two types of genetic materials - DNA and RNA.

Complete answer:
Option A: Bacteria have a single chromosome of double-stranded deoxyribonucleic acid (DNA). The region of the bacterial cytoplasm where the chromosome is located. Therefore, this is an incorrect answer.

Option B : cyanobacteria are gram negative photosynthetic prokaryotes. The cell don't have a well defined nucleus ,which means they can not undergo meiosis and fertilization. Therefore, this is an incorrect answer.

Option C : Bacteriophage or bacterial virus are the viruses that infect the bacteria. Bacteriophages usually double stranded DNA. Therefore, this is an incorrect answer.

Option D: Plant viruses parasitize the plant cells and disturb their metabolism and cause severe disease in them. The genetic material for most organisms is double-stranded (ds) DNA, only a minority of plant viruses possess dsDNA genomes. Some of the plant viruses have genomes that are composed of single-stranded (ss) DNA. However, plant viruses do not use DNA at all. Instead, the genomes of nearly all plant viruses are made of RNA and consists of ribonucleoproteins ih their organization.Therefore, this is the correct answer.

Thus, the correct answer is option (D) Plant virus.

Note:Plant viruses are pathogenic to higher plants. They are obligate intracellular parasites that do not have the molecular machinery to replicate without a host.