Class 11 Biology - Chapter Anatomy of Flowering Plants NCERT Solutions | What is periderm? How does periderm form
What is periderm? How does periderm formation take place in dicot stem?
Periderm is composed of the phellogen, phellem, and phelloderm.
During secondary growth, the outer epidermal layer and the cortical layer are broken because of the cambium. To replace them, the cells of the cortex turn meristematic, giving rise to cork cambium or phellogen. It is composed of thin-walled, narrow and rectangular cells.
Phellogen cuts off cells on its either side. The cells cut off toward the outside give rise to the phellem or cork. The suberin deposits in its cell wall make it impervious to water. The inner cells give rise to the secondary cortex or phelloderm. The secondary cortex is parenchymatous.
More Questions From Class 11 Biology - Chapter Anatomy of Flowering Plants
- Q:- What is stomatal apparatus? Explain the structure of stomata with a labelled diagram.
- Q:- Why are xylem and phloem called complex tissues?
- Q:- State the location and function of different types of meristem.
- Q:- Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.
- Q:- Explain the process of secondary growth in stems of woody angiosperm with help of schematic diagrams. What is the significance?
- Q:- The transverse section of a plant material shows the following anatomical features, (a) the vascular bundles are conjoint, scattered and surrounded by sclerenchymatous bundle sheaths (b) phloem parenchyma is absent. What will you identify it as?
- Q:- How is the study of plant anatomy useful to us?
- Q:- Name the three basic tissue systems in the flowering plants. Give the tissue names under each system.
- Q:- Draw illustrations to bring out anatomical difference between
(a) Monocot root and dicot root
(b) Monocot stem and dicot stem - Q:- Cut a transverse section of young stem of a plant from your school garden and observe it under the microscope. How would you ascertain whether it is a monocot stem or dicot stem? Give reasons.
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9 Comment(s) on this Question
Ur site is helping me a lot
Jyada achaa Ni tha
I feel that your answer is absolutely correct... awesome
mja..correct
Bekar not to the point ð¯
Issme Dicot stem ka figure bna sakte hai.
It na bada likhna knife jaruri that
Not to the point answer.., I'm totally unsatisfied by this :(
wrong answer.........
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