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Which of the following statements is/are...

Which of the following statements is/are true?
Uneven thickening of cell wall is characterstic of sclerenchyma
Periblem forms the cortex of the stem and the root.
Tracheids are the chief water transporting elements in gymnosperms.
Companion cell is devoid of nucleus a maturity.
The commercial cork is obtained from Quercus suber.

A

Uneven thickening of cell wall is characterstics of sclerenchyma

B

Periblem forms the cortex of the stem and the root

C

Tracheids are the chief water transporting elements in gymnosperms

D

Companion cell is devoid of nucelus at maturity.

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These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Minerals are mainly absorbed by roots which are in direct contact with atmosphere. reason:The absorbed mineral elements are transported from leaves to stem through xylem.

MODERN PUBLICATION-ANATOMY OF FLOWERING PLANTS-EXAMPLE
  1. Which of the following statements is/are true? Uneven thickening of ce...

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  2. State the location and function of different types of meristems.

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  3. Cork cambium forms tissues that form the cork. Do you agree with this ...

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  4. Explain the process of secondary growth in the stems of woody angiospe...

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  5. Draw illustrations to bring out the anatomical difference between: Mon...

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  6. Draw illustrations to bring out the anatomical difference between: Mon...

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  7. Cut a transverse section of young stem of a plant from your school gar...

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  8. The transverse section of a plant material shows the following anatomi...

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  9. The transverse section of a plant material shows the following anatomi...

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  10. Why are xylem and phloem called complex tissues?

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  11. What is stomatal apparatus? Explain the structure of stomata with a la...

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  12. Name the three basic tissue systems in the flowering plants. Give the ...

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  13. How is the study of plant anatomy useful to us?

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  14. What is periderm? How does periderm formation take place in the dicot ...

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  15. Describe the internal structure of a dorsiventral leaf with the help o...

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  16. A transverse section of stem is stained first with safranin and then w...

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  17. Identify the tissue system from among the following

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  18. Cells of this tissue are living and show angular wall thickening. They...

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  19. Epiblema of roots is equivalent to

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  20. A conjoint and open vascular bundle will be observed in the transverse...

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  21. Interfascicular cambium and cork cambium are formed due to

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