#Question id: 11743
#Unit 6. System Physiology – Plant
The wall between the two mature sieve tube elements contain a sieve plates, these sieve plate pores are open —that is, unobstructed by
#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 high, metabolic activity
U) laticifers vi) food translocation on gymnosperm