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The stomatal pore is guarded by two kidney shaped guard cells. Name the epidermal cells surrounding the guard cells. How does a guard cell differ from an epidermal cell?

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प्रश्न

The stomatal pore is guarded by two kidney shaped guard cells. Name the epidermal cells surrounding the guard cells. How does a guard cell differ from an epidermal cell? Use a diagram to illustrate your answer.

आकृति
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उत्तर

The epidermal cells surrounding the guard cells are called subsidiary cells. Following are the differences between guard cells and epidermal cells:

Guard Cells Epidermal Cells
(i) They are kidney-shaped. (i) They are barrel-shaped.
(ii) Chloroplast is present. (ii) Chloroplast is absent.
(iii) Smaller in size (iii) Bigger in size
(iv) Cell walls are not uniform and are thick. (iv) Cell walls are uniform and thin.

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अध्याय 6: Anatomy of Flowering Plants - Exercises [पृष्ठ ३२]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 11
अध्याय 6 Anatomy of Flowering Plants
Exercises | Q 12. | पृष्ठ ३२

संबंधित प्रश्न

In Gymnosperms, the activity of sieve cells are controlled by ______.


Grafting is successful in dicots but not in monocots because the dicots have ______.


Specialised epidermal cells surrounding the guard cells are called


Cuticle is secreted from


Match the following and choose the correct option from below

Column I Column II
A. Cuticle i. Guard cells
B. Bulliform cells ii. Single layer
C. Stomata iii. Waxy layer
D. Epidermis iv. Empty colourless cell

Identify the simple tissue system from the following.


What is present on the surface of the leaves which helps the plant prevent loss of water but is absent in roots?


Below is a list of plant fibres. From which part of the plant these are obtained

Cotton


Epidermal cells are often modified to perform specialized functions in plants. Name some of them and the function they perform.


Plants require water for their survival. But when watered excessively, plants die. Discuss.


Distinguish between the following:

Stem hair and root hair


What is the stomatal apparatus?


In the given figure, which component has thin outer walls and highly thickened inner walls?


Identify the correct statements:

  1. Lenticels are the lens-shaped openings permitting the exchange of gases.
  2. Bark formed early in the season is called hard bark.
  3. Bark is a technical term that refers to all tissues exterior to vascular cambium.
  4. Bark refers to periderm and secondary phloem.
  5. Phellogen is single-layered in thickness.

Choose the correct answer from the options given below:


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