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
Closed vascular bundles lack
ground tissue
conjunctive tissue
cambium
cambium
C.
cambium
In dicot system, cambium is present between phloem and xylem. Such vascular bundles, because of the presence of cambium, posses the ability to form secondary xylem and phloem tissues and hence, are called open vascular bundles. On the contrary, vascular bundles in monocots have no cambium. Hence, they do not form secondary tissues, and are referred to as closed.
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