Question

What is the difference between-

i.Tracheids and vessels

ii.Sieve plates and sieve tubes

Answer 1

sieve tubes are elongated tubular living conducting channels of phloem.
the transverse ends between adjacent sieve tubes are perforated and are called sieve plates

Answer 2

Answer:

Tracheids are tubular cells in the xylem of vascular plants, involving in the water conduction from roots to the leaves. Vessels: Vessels are elongated dead cells found in the xylem of flowering plants, consisting of perforated cell walls through which the water flows