#Question id: 11742
#Unit 6. System Physiology – Plant
Mature sieve elements external view, showing sieve plates. The pores in the sieve plates between the sieve tube elements are open channels, what is the relevance of this open pores in the sieve plates?
#Question id: 11741
#Unit 6. System Physiology – Plant
phloem transport indicating the importance of long distance transport in plants, the experiments demonstrated that removal of a ring of bark around the trunk of a tree, which removes the phloem. What will be its effect?
#Question id: 11740
#Unit 6. System Physiology – Plant
Some given characteristics of the two types of sieve elements in seed plants such as Sieve tube elements and Sieve cells. Find out the true characteristics of sieve tube elements from the given statements;
i) Found in angiosperms
ii) Sieve plate pores are open channels
iii) Albuminous cells sometimes function as companion
cells
iv) P-protein is present in all eudicots and many
monocots
v) There are no sieve plates; all sieve areas are similar
#Question id: 11050
#Unit 6. System Physiology – Plant
Three dimensional reconstructions of Arabidopsis sieve plates using a staining technique that can be used to image entire plant organs and Open sieve pores are visible as well as callose plug are also visible which technique used to analyze
#Question id: 11049
#Unit 6. System Physiology – Plant
Match the CORRECT combination of the phloem elements with its function.
| PHLOEM ELEMENTS | FUNCTIONS |
| P) sieve tube elements | i) for protection and strengthening of the tissue |
| Q) sieve cells | ii) store and release food molecules |
| R) companion cells | iii) food translocation in angiosperm |
| S) Phloem parenchyma cells | iv) latex containing cells |
| T) Phloem fibers and sclereids | v) help in flow of solute and show |
| U) laticifers | vi) food translocation on gymnosperm |
#Question id: 11048
#Unit 6. System Physiology – Plant
In vascular plants, phloem is the living tissue that transports the soluble organic compound made during photosynthesis in the form of sugar, The phloem tissue is made up of cells called phloem elements. Which of the following given phloem elements are directly involved in translocation?