T O Diener discovered a
free infectious RNA
free infectious DNA,
infectious protein
infectious protein
A.
free infectious RNA
Viroids are small, circular, single-stranded RNA molecules that are the smallest known pathogens.The extracellular form of the viroid is naked RNA, ie, there is no protein capsid of any kind. Even, the RNA molecule contains no protein encoding genes and therefore, the viroid is totally dependent on host function for its replication. No viroid diseases of animals are known and the precise mechanisms by which viroids cause plant diseases remain unclear.
A fruit developed from hypanthodium inflorescence is called
hesperidium
sorosis
syconus
syconus
Cyclic-photophosphorylation results in the formation of
NADPH
ATP and NADPH
ATP, NADPH and O2
ATP, NADPH and O2
Reduction is vascular tissue, mechanical tissue and cuticle is characteristic of
xerophytes
mesophytes
epiphytes
epiphytes
Which one of the following is considered important in the development of seed habit?
Dependent sporophyte
Heterospory
Haplontic life cycle
Haplontic life cycle
The bacterium Bacillus thuringiensis is widely used in contemporary biology as a/an
Indicator of water pollution
insecticide
agent for the production of dairy products
agent for the production of dairy products
Peripatus is a connecting link between
Ctenophora and Platyhelminthes
Mollusca and Echinodermata
Annelida and Arthropoda
Annelida and Arthropoda
Globulins contained in human blood plasma are primarily involved in
defence mechanisms of the body
the osmotic balance of body fluids
oxygen transport in the blood
oxygen transport in the blood
