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Which of the following is a primary meristem
- a)Intra fascicular cambium
- b)Cork cambium
- c)Vascular cambium in roots
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following is a primary meristema)Intra fascicular cambium...
The cork cambium is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems. It is found in woody and many herbaceous dicots, gymnosperms and some monocots (monocots usually lack secondary growth).
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Which of the following is a primary meristema)Intra fascicular cambium...
Cork cambium
Jump to navigation https://en.wikipedia.org/wiki/Cork_cambium#mw-head |  |
Jump to search https://en.wikipedia.org/wiki/Cork_cambium#p-search | |
Cork cambium (pl. cambia or cambiums) is a
found in many vascular plants as part of the
. The cork cambium is a lateral
and is responsible for secondary growth that replaces the
in
and
. It is found in woody and many herbaceous
,
and some
(monocots usually lack secondary growth). It is one of the plant's meristems – the series of tissues consisting of embryonic (incompletely differentiated) cells from which the plant grows. It is one of the many layers of
, between the cork and primary
. The function of cork cambium is to produce the
, a tough protective material.
tissue https://en.wikipedia.org/wiki/Biological_tissue | |
epidermis https://en.wikipedia.org/wiki/Epidermis | |
meristem https://en.wikipedia.org/wiki/Meristem | |
epidermis https://en.wikipedia.org/wiki/Epidermis_(botany) | |
roots https://en.wikipedia.org/wiki/Root | |
stems https://en.wikipedia.org/wiki/Plant_stem | |
dicots https://en.wikipedia.org/wiki/Dicot | |
gymnosperms https://en.wikipedia.org/wiki/Gymnosperm | |
monocots https://en.wikipedia.org/wiki/Monocot | |
bark https://en.wikipedia.org/wiki/Bark_(botany) | |
phloem https://en.wikipedia.org/wiki/Phloem | |
cork https://en.wikipedia.org/wiki/Cork_(tissue) | |
[1] https://en.wikipedia.org/wiki/Cork_cambium#cite_note-Junikka-1 | |
[2] https://en.wikipedia.org/wiki/Cork_cambium#cite_note-Trockenbrodt-2 | |
Synonyms for cork cambium are bark cambium, pericambium and phellogen. Phellogen is defined as the meristematic cell layer responsible for the development of the periderm. Cells that grow inwards from there are termed phelloderm, and cells that develop outwards are termed phellem or cork (note similarity with
). The
thus consists of three different layers:
vascular cambium https://en.wikipedia.org/wiki/Vascular_cambium | |
periderm https://en.wikipedia.org/wiki/Periderm | |
[1] https://en.wikipedia.org/wiki/Cork_cambium#cite_note-Junikka-1 | |
[2] https://en.wikipedia.org/wiki/Cork_cambium#cite_note-Trockenbrodt-2 | |
- phelloderm – inside of cork cambium; composed of living parenchyma cells
- phellogen (cork cambium) – meristem that gives rise to periderm
- phellem (cork) – dead at maturity; air-filled protective tissue on the outside
Growth and development of cork cambium is very variable between different species, and is also highly dependent on age and growth conditions, as can be observed from the different surfaces of bark, which may be smooth, fissured, tesselated, scaly, or flaking off.
Commercial
is derived from the bark of the
(Quercus suber). Cork has many uses including wine bottle stoppers, bulletin boards, coasters, hot pads to protect tables from hot pans, insulation, sealing for lids, flooring, gaskets for engines, fishing bobbers, handles for fishing rods and tennis rackets, etc. It is also a high strength-to-weight/cost ablative material for aerodynamic prototypes in wind tunnels, as well as satellite launch vehicle payload fairings, reentry surfaces, and compression joints in thrust-vectored solid rocket motor nozzles.[
]
cork https://en.wikipedia.org/wiki/Cork_(material) | |
cork oak https://en.wikipedia.org/wiki/Cork_oak | |
citation needed https://en.wikipedia.org/wiki/Wikipedia:Citation_needed | |
Many types of bark are used as
.
mulch https://en.wikipedia.org/wiki/Mulch | |
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