Which one of the following tissues is known as basic packing tissue and found in xylem and phloem?

Which one of the following statements about phloem is correct?

Which one of the following tissues is responsible for increase of girth in the stem of a plant?

Xylem is a type of complex tissue in plants for upward conduction of water. Which one of the following xylem tissues consists of living cells?

Which one of the following is NOT a root?

Which one of the following is a plant hormone?