Which of the following statements pertaining to plant structure is incorrect?

Phellogen, phellem, and phelloderm are collectively known as periderm

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Phloem is composed of passage cells, sieve tube elements, phloem parenchyma and phloem fibers

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Xylem is composed of tracheids, vessels, xylem fibres, and xylem parenchyma

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Tissues such as pericycle, vascular bundles and pith constitute the stele

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Solution

The correct option is B Phloem is composed of passage cells, sieve tube elements, phloem parenchyma and phloem fibers
Phloem is a complex permanent tissue made up of sieve tubes, companion cells, phloem fibers and phloem parenchyma.

Passage cells are thin walled parechymatous cells found in the endodermis of roots, more prominently in a dicot root.

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Similar questions

What substance/substances are transported in plants by :
(a) xylem vessels and tracheids ?
(b) sieve tubes (or phloem) ?

Q. Consider the following statements
(a) Xylem transports water and minerals
(b) Gymnosperms lack sieve tubes and companion cells in phloem
(c) First formed primary xylem is called metaxylem
(d) Phloem fibres (bast fibres) are made of collenchyma
Of these statements

Q. Consider the following statements and choose the correct option.
(i) The thread like cytoplasmic strands, running from one companion cell to a sieve cell is called as plasmodesmata.
(ii) Fibres are absent in both xylem and phloem in a dicotyledonous leaf.
(iii) The first form xylem elements are described as metaxylem.
(iv) Radial vascular bundles are mainly found in the leaves.

Which of the following statements are correct?

(i) Companion cells are present in phloem.
(ii) Xylem transports water and minerals from roots to other parts of the plant.
(iii) Vessels of xylem are present in all plants.
(iv) Both xylem parenchyma and phloem parenchyma have nucleus.

Q. Choose the correct options
(a) Thread-like cytoplasmic strands, running from one cell to other are known as plasmodesmata
(b) Xylem and phloem constitute the vascular bundle of the stem
(c) First formed xylem elements are described as metaxylem
(d) Radial bundles are mainly found in leaves.

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