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In woody trees, the exchange of gases be...

In woody trees, the exchange of gases between the outer atmosphere and the internal tissue of the stem takes place through

A

aerenchyma

B

stomata

C

pheumatophores

D

lenticels

Text Solution

Verified by Experts

The correct Answer is:
D
Lenticels are small pores formed on the surface of stems and roots of higher plants. Lenticels usually arise below the stomata of the original epidermis, where loose packing tissue becomes waterproof with suberin, leaving large intercellular spaces through which gas exchange can take place.
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ARIHANT NEET-ANATOMY OF FLOWERING PLANTS -Chapter exercises ( Medical entrances gallery)
  1. Which one of the following statements is true ?

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  2. Which of the following is not a part of epidermal tissue system

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  3. In woody trees, the exchange of gases between the outer atmosphere and...

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  4. Cork cambium gives rise to

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  5. At maturity the sieve plates become impregnated with

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  6. Match the following Columns .

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  7. Alburnum is otherwise known as

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  8. Arrange the following in the order of their location from periphery to...

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  9. Vascular tissue in higher plants develops from which of the following ...

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  10. Consider the following statement and choose the correct option (i...

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  11. Casparian strip is a characteristic feature of

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  12. Desert grasses often roll their leaves due to presence of

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  13. In dicot stem, vascular bundles are

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  14. Which of the following tissues consist of living cells

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  15. What is /are true about heart wood A. It does not help in water con...

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  16. Tunica corpus theory was proposed by

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  17. plant grwoth in length is increased by

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  18. In an annual ring, the light coloured part is known as

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  19. The annular and spirally thickened conducting elements generally deve...

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  20. Anatomically fairly old dicotyledonous root is distinguished from the ...

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