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Among the tracheids and vessels which ar...

Among the tracheids and vessels which are more evolved elements

A

vessels

B

tracheids

C

both are highly evolved

D

both are present in all vascular plants

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NIKITA PUBLICATION -PLANT TISSUE AND ANATOMY-EXERCISE
  1. Which of the following is true for vessels?

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  2. The thickenings present in vessels & tracheids are

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  3. Among the tracheids and vessels which are more evolved elements

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  4. Which elements of xylem helps in conduction of water and minerals as w...

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  5. The elements of xylem helps in storage & living is

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  6. Identify the false statement

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  7. Read the followingstatements... (A) When protoxylem towards centre an...

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  8. Which of the following is true about xylem parenchyma

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  9. Secondary xylem is formed from... during…

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  10. The balloon like outgrowth formed by xylem parenchyma into vessels are...

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  11. Structures which develop from wood parenchyma block transportation of ...

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  12. Which of the following is present in both xylem and phloem

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  13. Longest vessel is of:

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  14. Conducting part of phloem is also named as....

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  15. Companion cells are seen associated with..... and controls the conduct...

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  16. A living mature cell which lacks nucleus.

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  17. In mature sieve tubes a carbohydrate is responsible for closing the si...

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  18. The cell functionally associated with sieve tube only in angiosperm an...

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  19. The Chief conducting element in the phloem of angiosperm is

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  20. Which of the following statement is true

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