In viruses called retroviruses, the genetic information is contained in RNA; these viruses have no DNA. These viruses also have an enzyme called reverse transcriptase. What is its function?

It catalyses the synthesis of complementary DNA copies from RNA.

Explanation:

The reverse transcriptase is an enzyme that allows strands of DNA molecules to be synthesized from a single strand RNA template. The enzyme, also known as RNA directed DNA polymerase is usually used by retroviruses to synthesize complementary DNA sequence from an RNA template, a process that is an opposite of transcription.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.