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
A.
medullary rays
In dicot stems, the cells of cambium present between primary xylem and primary phloem are the intrafasicular cambium. The cells of medullary rays, adjoining these intrafascicular cambium become meristematic and form the interfascicular cambium. Xylem parenchyma is living and thin-walled and their cell walls are made up of cellulose. In dicot roots, the innermost layer of the cortex is called endodermis. Next to endodermis lies a few layers of thin-walled parenchymatous cells called as pericycle.
Lenticels are involved in
Transpiration
Gaseous exchange
Food transport
Food transport
Companion cells are closely associated with
sieve elements
vessel elements
trichomes
trichomes
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