Multiple Choice QuestionsIn the following pairs, where do you get lignin in both the element?
Tracheid and collenchyma
Sclerenchyma and sieve tube
Sclerenchyma and trachea
Parenchyma and endodermis
One of the characteristic of sieve tube is
it is a part of phloem
function is transport of inorganic solutes
it is dead cell
sieve plate is not present
Interfascicular cambium is a
primary meristematic tissue
primordial meristem
type of protoderm
secondary meristematic tissue
Portion of apical meristem that gives xylem tissue is called
protoxylem
procambium
metaxylem
tracheid
Interfascicular cambium develops from the cells of
medullary rays
xylem parenchyma
endodermis
pericycle
Lenticels are involved in
transpiration
gaseous exchange
food transport
photosynthesis
B.
gaseous exchange
Plants have stomata and lenticles involved in gaseous exchange. In stems the living cells are organised in thin layers inside and beneath the bark. They have openings called lenticles.
Transpiration is the evaporative loss of water by plants. It occurs mainly through stomata in leaves.
Food transport occurs by the vascular tissue phloem from a source to a sink.
Photosynthesis is a physico-chemical process by which they use light energy to derive re- synthesis of organic compounds.
Age of a tree can be estimated by
its height and girth
biomass
number of annual rings
diameter of its heartwood
Medullary rays are tissues made up of
phloem parenchyma
xylem parenchyma
sieve tube
sclerenchyma
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