Short Answer TypeWhat is present on the surface of the leaves which helps the plant prevent loss of water but is absent in roots?
Below is a list of plant fibres. From which part of the plant these are
obtained
a. Coir
b. Hemp
c. Cotton
d. Jute
One Word AnswersThe lawn grass (Cyandon dactylon) needs to be mowed frequently to prevent its overgrowth. Which tissue is responsible for its rapid growth?
Short Answer TypeWrite the precise function of
a. Sieve tube
b. Interfasicular cambium
c. Collenchyma
d. Aerenchyma
Multiple Choice QuestionsInterfascicular cambium develops from the cells of
medullary rays
xylem parenchyma
endodermis
endodermis
Lenticels are involved in
Transpiration
Gaseous exchange
Food transport
Food transport
Companion cells are closely associated with
sieve elements
vessel elements
trichomes
trichomes
A.
sieve elements
Companion cells are characteristic elements of phloem tissue associated with the sieve tubes(sieve elements) in the angiosperms. The siever tubes and companion cells are related ontogenically as they develop from the same mother cell. The companion cells and sieve tubes maintain close cytoplasmic connections through plasmodesmata.
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