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Standard XII
Biology
Question

The function of cork cambium (phellogen) is to produce
  1. Secondary cortex and phloem
  2. Cork and secondary phloem
  3. Cork and secondary cortex
  4. Secondary xylem and secondary phloem

A
Cork and secondary phloem
B
Cork and secondary cortex
C
Secondary xylem and secondary phloem
D
Secondary cortex and phloem
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Solution
Verified by Toppr

  • The cork cambium is a lateral meristem that divides to produce cork (Phellem) on the outer side and secondary cortex (Phelloderm) on the inner side.
  • Phellogen (cork cambium) is defined as a meristematic cell layer responsible for the development of the periderm (Phellem + Phellogen + Phelloderm).
  • The secondary xylem and secondary phloem are produced by the vascular cambium. Thus, options B, C, and D are wrong.

Hence, the correct answer is option A.

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Similar Questions
Q1

Phellogen and phellem respectively denote

(a) cork and cork cambium

(b) cork cambium and cork

(c) secondary cortex and cork

(d) cork and secondary cortex

View Solution
Q2
The collective term used for phelloderm (secondary cortex), cork cambium (phellogen) and cork (phellem) is

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Q3
Select dedifferentiated tissue from box.
Interfascicular cambium, Cork cambium, Cork, Secondary xylem, Secondary phloem

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Q4
Which of the following is/are not true?
(A) cork cambium is otherwise called phellogen
(B) Cork is otherwise called phellem
(C) Secondary cortex is otherwise called periderm
(D) Cork cambium, cork and secondary cortex are collectively called phelloderm.
View Solution
Q5
Which of the following statements is or are not true?
1. Cork cambium is otherwise called as phellogen.
2. Cork is otherwise called as phellem.
3. Secondary cortex is otherwise called as periderm.
4. Cork cambium, cork and secondary-cortex are collectively called as phelloderm.
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