Multiple choice

The two kinds of elements present in a xylem are

  1. sieve tubes and vessels

  2. sieve tube and companion cells

  3. guard cells and fibres

  4. tracheids and vessels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The xylem tissue, vessels and tracheids of the roots, stems and leaves are interconnected to form a continuous system of water-conducting channels reaching all parts of the plant. So, option 4 is correct.

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