. In the sieve elememts, which one of the following is the most likely function of p-proteins


(a)Deposition of callose on sieve plates

(b)  Providing energy for active translocation

(c)  Autolytic enzymes

(d)  Sealing mechanism on wounding

 

Best Answer

Answer: D

Solution : In most angiospermic plants, sieve tube-elements of phloem, are P-protein, later is found in all dicots and in many monocots but it is absent in gymnosperms and cryptogams.

The main function of P-protein is in sealing off damaged sieve elements by plugging up sieve plate pores

 

Talk to Our counsellor