Which of the following contain xylem vessel

Which one of the following contain xylem vessels?

Which of the following contain blood vessels and nerves?

In which of the following xylem lacks vessels?

Which of the following components of xylem is living (a) Xylem tracheids (b) Xylem vessels (c) Parenchyma (d) None of these

Which one of the following blood vessel in mammals contains least amount of urea :

Which of the following blood vessel contain maximum amount of urea?

Which one of the following blood vessel in mammals contains least amount of urea :

Which one of the following blood vessel in mammals contains least amount of urea :